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timestamp[us]date 1999-12-11 03:00:00
2025-07-14 02:38:35
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|---|---|---|---|---|---|---|---|---|---|---|---|---|
A011801 | Triangle read by rows, the inverse Bell transform of n!*binomial(4,n) (without column 0). | [
"1",
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"12",
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"504",
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"84",
"1",
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"4302305280",
"887785920",
"102332160",
"7254576",
"325584",
"9072",
"144",
"1"
]
| [
"easy",
"nonn",
"tabl"
]
| 47 | 1 | 2 | [
"A000369",
"A001497",
"A004747",
"A008277",
"A008546",
"A010054",
"A011801",
"A013988",
"A028575",
"A049223",
"A264428"
]
| null | Wolfdieter Lang | 2023-10-03T13:14:46 | oeisdata/seq/A011/A011801.seq | 133c9a08790c7c9f4a379b2aa68940ae |
A011802 | Duplicate of A007065. | [
"1",
"2",
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"42",
"392",
"5345",
"102050",
"2632429",
"89026966",
"3851458088",
"208865852153"
]
| [
"dead"
]
| 8 | -1 | 2 | null | null | null | 2025-06-01T22:42:38 | oeisdata/seq/A011/A011802.seq | 452dad517b56dda26df58c652a664166 |
A011803 | Duplicate of A007625. | [
"1",
"2",
"8",
"64",
"904",
"20926",
"753994",
"40412530",
"3099627142",
"329518779600"
]
| [
"dead"
]
| 4 | -1 | 2 | null | null | null | 2008-06-29T03:00:00 | oeisdata/seq/A011/A011803.seq | ff16dcf8d546d835fabf216a5a417bff |
A011804 | M-sequences from multicomplexes on at most 7 variables with no monomial of degree more than n-1. | [
"2",
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"93",
"1899",
"70506",
"4486435",
"463830877",
"74407044673",
"17824974050808",
"6177590123863188",
"3015767999171508360",
"2026808543279157951071",
"1838007806558686610254487",
"2209395428479037427756551320"
]
| [
"nonn"
]
| 7 | 0 | 1 | [
"A007065",
"A007625",
"A011804",
"A011805",
"A011806",
"A011807",
"A011808",
"A011809"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T06:26:41 | oeisdata/seq/A011/A011804.seq | 4822154dbd42ffd310456626be2b045f |
A011805 | M-sequences from multicomplexes on at most 8 variables with no monomial of degree more than n-1. | [
"2",
"10",
"130",
"3694",
"209746",
"22285884",
"4172654846",
"1306811152024",
"655264935972190",
"507167545168644168",
"587555115672049489686",
"992317695587529344756452",
"2387516249252596658477327568"
]
| [
"nonn"
]
| 7 | 0 | 1 | [
"A007065",
"A007625",
"A011804",
"A011805",
"A011806",
"A011807",
"A011808",
"A011809"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T06:26:58 | oeisdata/seq/A011/A011805.seq | cb1910fb9398d7d2c4a5923892f6b5da |
A011806 | M-sequences from multicomplexes on at most 9 variables with no monomial of degree more than n-1. | [
"2",
"11",
"176",
"6743",
"562727",
"95264798",
"30636553704",
"17675571563918",
"17429225215357484",
"28199043639169683222",
"72319533139138698523941",
"285428460453153302654918919",
"1689512010464368927544841098844"
]
| [
"nonn"
]
| 7 | 0 | 1 | [
"A007065",
"A007625",
"A011804",
"A011805",
"A011806",
"A011807",
"A011808",
"A011809"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T06:27:22 | oeisdata/seq/A011/A011806.seq | c27fc6891f0b031add6aa7e957b501e7 |
A011807 | M-sequences from multicomplexes on at most 10 variables with no monomial of degree more than n-1. | [
"2",
"12",
"232",
"11672",
"1384758",
"359074648",
"189675768766",
"191922235160156",
"352948154052188478",
"1128291787675746659550",
"6036763457041517857600280",
"52327736404697360992760687988"
]
| [
"nonn"
]
| 7 | 0 | 1 | [
"A007065",
"A007625",
"A011804",
"A011805",
"A011806",
"A011807",
"A011808",
"A011809"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T06:27:48 | oeisdata/seq/A011/A011807.seq | 7f1882dd409387a2824bf4b1e3278d55 |
A011808 | M-sequences from multicomplexes on at most 11 variables with no monomial of degree more than n-1. | [
"2",
"13",
"299",
"19318",
"3167606",
"1216716022",
"1016289045634",
"1729283934497328",
"5667546539054689443",
"34105149235238728913664",
"361714725652426571177689094",
"6527156272709807559816283769206"
]
| [
"nonn"
]
| 7 | 1 | 1 | [
"A007065",
"A007625",
"A011804",
"A011805",
"A011806",
"A011807",
"A011808",
"A011809"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T06:28:13 | oeisdata/seq/A011/A011808.seq | f33cd61537454aaf2ceeb503fc101a8d |
A011809 | M-sequences from multicomplexes on at most 12 variables with no monomial of degree more than n-1. | [
"2",
"14",
"378",
"30772",
"6807620",
"3763991016",
"4811471951354",
"13277799809473332",
"74561538032148504662",
"809821626491578170933334",
"16284904611381210096496935806",
"583857656205952477141180365415562"
]
| [
"nonn"
]
| 7 | 0 | 1 | [
"A007065",
"A007625",
"A011804",
"A011805",
"A011806",
"A011807",
"A011808",
"A011809"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T06:28:34 | oeisdata/seq/A011/A011809.seq | 37070e482949ee8b758fdff90d64273f |
A011810 | M-sequences from multicomplexes on 4 variables with all monomials of degree 2 but none of degree larger than n. | [
"0",
"0",
"1",
"21",
"330",
"4931",
"76064",
"1257345",
"22707559",
"452800399",
"10023029299",
"246756095614",
"6752175162108",
"204875755372586",
"6868905893537535",
"253432530143048034",
"10246233216680784186",
"452038162651568624259"
]
| [
"nonn"
]
| 8 | 0 | 4 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T06:20:30 | oeisdata/seq/A011/A011810.seq | 79c89bf8f106b7e140a9549e543e939d |
A011811 | M-sequences from multicomplexes on 4 variables with all monomials of degree 3 but none of degree larger than n. | [
"0",
"0",
"0",
"1",
"36",
"911",
"20807",
"468557",
"10840767",
"263427401",
"6809977027",
"188790121348",
"5641465341098",
"182310843939953",
"6383884849646341",
"242427118777826690",
"9983217876902418734",
"445432587418516596408"
]
| [
"nonn"
]
| 7 | 0 | 5 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T17:59:27 | oeisdata/seq/A011/A011811.seq | 3347c01af3bc39d62039cfb86fb8a506 |
A011812 | M-sequences from multicomplexes on 4 variables with all monomials of degree 4 but none of degree larger than n. | [
"0",
"0",
"0",
"0",
"1",
"57",
"2185",
"72881",
"2322629",
"73949186",
"2410067138",
"81563004129",
"2892108485341",
"108078014350565",
"4273605661408932",
"179311027612775138",
"7999342346440002428",
"379986003510210048053",
"19238835001520254448553"
]
| [
"nonn"
]
| 6 | 0 | 6 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T17:59:18 | oeisdata/seq/A011/A011812.seq | aac018fd227ed9c17f2854dfa8e63a08 |
A011813 | M-sequences from multicomplexes on 4 variables with all monomials of degree 5 but none of degree larger than n. | [
"0",
"0",
"0",
"0",
"0",
"1",
"85",
"4699",
"219836",
"9595906",
"409867615",
"17589965248",
"770635739545",
"34813976611381",
"1632431803786770",
"79803825438459069",
"4080007508711841376",
"218627996809373217066",
"12298853131687073056568"
]
| [
"nonn"
]
| 6 | 0 | 7 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T17:59:09 | oeisdata/seq/A011/A011813.seq | b98635baa8e4a821f61df37cc13c849a |
A011814 | M-sequences from multicomplexes on 4 variables with all monomials of degree 6 but none of degree larger than n. | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"121",
"9274",
"588336",
"34169279",
"1910015056",
"105715598909",
"5894822718103",
"334864912935350",
"19523280973963941",
"1174121560958610835",
"73092687563740003227",
"4721840282194948355236"
]
| [
"nonn"
]
| 6 | 0 | 8 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T17:58:59 | oeisdata/seq/A011/A011814.seq | d777fe42799a31e9ad7a57360e27f906 |
A011815 | M-sequences from multicomplexes on 4 variables with all monomials of degree 7 but none of degree larger than n. | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"166",
"17084",
"1429000",
"107722408",
"7709260963",
"539697521271",
"37652839010763",
"2649928897359089",
"189683841710882135",
"13888624543485989550",
"1044391475357613415884"
]
| [
"nonn"
]
| 6 | 0 | 9 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T17:58:50 | oeisdata/seq/A011/A011815.seq | 9f6e18d5cf593f8346d41b135584daf6 |
A011816 | M-sequences from multicomplexes on 4 variables with all monomials of degree 8 but none of degree larger than n. | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"221",
"29745",
"3204423",
"307002944",
"27599253281",
"2402068598621",
"206421946595193",
"17745023547769043",
"1539711485029843466",
"135701086522090847679",
"12203103757932310440888"
]
| [
"nonn"
]
| 6 | 0 | 10 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T17:58:39 | oeisdata/seq/A011/A011816.seq | 619565861543428d0b9f0d133c5d27ee |
A011817 | M-sequences from multicomplexes on 4 variables with all monomials of degree 9 but none of degree larger than n. | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"287",
"49414",
"6721391",
"803816457",
"89294859907",
"9517387613809",
"993526926534580",
"102994962998587912",
"10705388607233154107",
"1123359305409427947266"
]
| [
"nonn"
]
| 6 | 0 | 11 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2018-06-28T17:58:27 | oeisdata/seq/A011/A011817.seq | 4f06c3d4735fde2c4baf7a1660f5c655 |
A011818 | Normalized volume of center slice of n-dimensional cube: 2^n* n!*Vol({ (x_1,...,x_n) in [ 0,1 ]^n: n/2 <= Sum_{i = 1..n} x_i <= (n+1)/2 }). | [
"1",
"3",
"16",
"115",
"1056",
"11774",
"154624",
"2337507",
"39984640",
"763546234",
"16101629952",
"371644257582",
"9319104528384",
"252270887452380",
"7332475985461248",
"227761317947788323",
"7529455986838732800",
"263948439074152148450"
]
| [
"nonn",
"easy"
]
| 28 | 1 | 2 | [
"A008292",
"A011818",
"A025585",
"A104098"
]
| null | Guenter M. Ziegler (ziegler(AT)math.tu-berlin.de) | 2019-06-03T01:41:00 | oeisdata/seq/A011/A011818.seq | d40a27e7b7ab5aa170ee2ef11f6c52a3 |
A011819 | M-sequences m_0,m_1,m_2,m_3 with m_1 < n. | [
"2",
"5",
"16",
"52",
"152",
"392",
"904",
"1899",
"3694",
"6743",
"11672",
"19318",
"30772",
"47426",
"71024",
"103717",
"148122",
"207385",
"285248",
"386120",
"515152",
"678316",
"882488",
"1135535",
"1446406",
"1825227",
"2283400",
"2833706",
"3490412",
"4269382",
"5188192",
"6266249"
]
| [
"nonn",
"easy"
]
| 24 | 1 | 1 | [
"A011819",
"A011820",
"A011825",
"A011827"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2022-09-08T08:44:37 | oeisdata/seq/A011/A011819.seq | 043dcb6c17ee3e9b8fcea3b5bb6fca08 |
A011820 | Number of M-sequences m_0,...,m_4 with m_1 < n. | [
"2",
"6",
"32",
"203",
"1144",
"5345",
"20926",
"70506",
"209746",
"562727",
"1384758",
"3167606",
"6807620",
"13863904",
"26941700",
"50245591",
"90358146",
"157312324",
"266040452",
"438299013",
"705186944",
"1110395771",
"1714352818",
"2599444040",
"3876530866"
]
| [
"nonn",
"easy"
]
| 26 | 0 | 1 | [
"A011819",
"A011820",
"A011825",
"A011828"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2024-02-07T11:29:39 | oeisdata/seq/A011/A011820.seq | 974ffa4209896db63fa3a97a00456320 |
A011821 | Number of M-sequences m_0,...,m_5 with m_1 < n. | [
"2",
"7",
"64",
"877",
"10742",
"102050",
"753994",
"4486435",
"22285884",
"95264798",
"359074648",
"1216716022",
"3763991016",
"10763615106",
"28741372964",
"72261453121",
"172248589406",
"391536067037",
"852876877928",
"1787799809335",
"3619382778994"
]
| [
"nonn",
"easy"
]
| 23 | 1 | 1 | [
"A011819",
"A011821",
"A011825",
"A011829"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2019-11-24T13:16:32 | oeisdata/seq/A011/A011821.seq | 0a8bc59c361715b5cf4e41964b9e09cf |
A011822 | M-sequences m_0,...,m_6 with m_1 < n. | [
"2",
"8",
"128",
"4140",
"122772",
"2632429",
"40412530",
"463830877",
"4172654846",
"30636553704",
"189675768766",
"1016289045634",
"4811471951354",
"20467607443084",
"79306666347738",
"283064080815539",
"939401940609112"
]
| [
"nonn"
]
| 4 | 1 | 1 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011822.seq | f623393c7f49d32970995e54fc310cb6 |
A011823 | M-sequences m_0,...,m_7 with m_1 < n. | [
"2",
"9",
"256",
"21147",
"1673856",
"89026966",
"3099627142",
"74407044673",
"1306811152024",
"17675571563918",
"191922235160156",
"1729283934497328",
"13277799809473332",
"88759840725469601",
"525698154348040682"
]
| [
"nonn"
]
| 4 | 1 | 1 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011823.seq | 2b0aff35c9dbd6c6ba4966b6b5870e54 |
A011824 | M-sequences m_0,...,m_8 with m_1 < n. | [
"2",
"10",
"512",
"115975",
"26780972",
"3851458088",
"329518779600",
"17824974050808",
"655264935972190",
"17429225215357484",
"352948154052188478",
"5667546539054689443",
"74561538032148504662",
"825178947144750263648"
]
| [
"nonn"
]
| 4 | 1 | 1 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011824.seq | a4d8f0d73a8a77537a8892f1fd493485 |
A011825 | M-sequences m_0,...,m_9 with m_1 < n. | [
"2",
"11",
"1024",
"678570",
"496090330",
"208865852153",
"47292630585258",
"6177590123863188",
"507167545168644168",
"28199043639169683222",
"1128291787675746659550",
"34105149235238728913664"
]
| [
"nonn"
]
| 4 | 1 | 1 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011825.seq | 685197f10416ce07a8db0a7d3cc6cc50 |
A011826 | f-vectors for simplicial complexes of dimension at most 1 (graphs) on at most n-1 vertices. | [
"2",
"3",
"5",
"9",
"16",
"27",
"43",
"65",
"94",
"131",
"177",
"233",
"300",
"379",
"471",
"577",
"698",
"835",
"989",
"1161",
"1352",
"1563",
"1795",
"2049",
"2326",
"2627",
"2953",
"3305",
"3684",
"4091",
"4527",
"4993",
"5490",
"6019",
"6581",
"7177",
"7808",
"8475",
"9179",
"9921",
"10702",
"11523",
"12385",
"13289"
]
| [
"nonn"
]
| 38 | 1 | 1 | [
"A000124",
"A004006",
"A011826",
"A014206",
"A033547"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2023-07-14T15:12:36 | oeisdata/seq/A011/A011826.seq | 438ee195e291366d64caf40a3fee3691 |
A011827 | f-vectors for simplicial complexes of dimension at most 2 on at most n-1 vertices. | [
"2",
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"5",
"10",
"25",
"70",
"190",
"471",
"1060",
"2189",
"4203",
"7592",
"13027",
"21400",
"33868",
"51901",
"77334",
"112423",
"159905",
"223062",
"305789",
"412666",
"549034",
"721075",
"935896",
"1201617",
"1527463",
"1923860",
"2402535",
"2976620",
"3660760",
"4471225",
"5426026"
]
| [
"nonn"
]
| 10 | 1 | 1 | [
"A011826",
"A011827"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2012-09-19T06:02:49 | oeisdata/seq/A011/A011827.seq | 33b280674cd1e761cbd8022cdc03d0cc |
A011828 | Number of f-vectors for simplicial complexes of dimension at most 3 on at most n-1 vertices. | [
"2",
"3",
"5",
"10",
"26",
"95",
"457",
"2246",
"9705",
"35926",
"115688",
"331201",
"859587",
"2054860",
"4582126",
"9627831",
"19217260",
"36679253",
"67308375",
"119286676",
"204940824",
"342425909",
"557944719",
"888630900",
"1386246251",
"2121866592",
"3191757298"
]
| [
"nonn"
]
| 14 | 1 | 1 | [
"A007695",
"A011827",
"A011828"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2012-09-18T16:44:37 | oeisdata/seq/A011/A011828.seq | e813fe58eb94fe0e1064d7f583be7d20 |
A011829 | Number of f-vectors for simplicial complexes of dimension at most 4 on at most n-1 vertices. | [
"2",
"3",
"5",
"10",
"26",
"96",
"552",
"4908",
"48230",
"398663",
"2631241",
"14192097",
"64663638",
"256174350",
"902972232",
"2883651027",
"8463753978",
"23094833355",
"59133598085",
"143164108028",
"329810868994",
"726833391860",
"1539215246944",
"3144340388550"
]
| [
"nonn"
]
| 23 | 1 | 1 | [
"A007695",
"A011828",
"A011829",
"A011830",
"A011831",
"A011832",
"A011833"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2020-09-16T05:00:13 | oeisdata/seq/A011/A011829.seq | c509444b81a19550bd30e1335e47eff1 |
A011830 | f-vectors for simplicial complexes of dimension at most 5 on at most n-1 vertices. | [
"2",
"3",
"5",
"10",
"26",
"96",
"553",
"5460",
"95248",
"2016372",
"34221167",
"428585293",
"4098654791",
"31352026159",
"199469201193",
"1088301119016",
"5214558528621",
"22356794011130",
"87058966205928",
"311663090859133",
"1035954502931899"
]
| [
"nonn"
]
| 3 | 1 | 1 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011830.seq | 720423314b36c98b7159f1c075c4a9fa |
A011831 | f-vectors for simplicial complexes of dimension at most 6 on at most n-1 vertices. | [
"2",
"3",
"5",
"10",
"26",
"96",
"553",
"5461",
"100708",
"3617645",
"173567527",
"6366566540",
"158639466203",
"2814676722153",
"37776715520590",
"402955577714030",
"3548682190216501",
"26572504193848015",
"173131916047617788"
]
| [
"nonn"
]
| 3 | 1 | 1 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011831.seq | 35288c0300906d7a6f17a88eb53ea705 |
A011832 | f-vectors for simplicial complexes of dimension at most 7 on at most n-1 vertices. | [
"2",
"3",
"5",
"10",
"26",
"96",
"553",
"5461",
"100709",
"3718353",
"286007155",
"32121018248",
"2641102182925",
"135759833224363",
"4635201718175448",
"113247016996007525",
"2101126725683521037",
"30975390230263001230",
"375710371221886207918"
]
| [
"nonn"
]
| 3 | 1 | 1 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011832.seq | 4308aff8e4b7c55727b3c808864c0493 |
A011833 | Number of f-vectors for simplicial complexes of dimension at most 8 on at most n-1 vertices. | [
"2",
"3",
"5",
"10",
"26",
"96",
"553",
"5461",
"100709",
"3718354",
"289725508",
"49224068017",
"13203989190379",
"2498210880028303",
"272472900722736282",
"18445455348353453707",
"846271790301299050986",
"28189314873080070171124"
]
| [
"nonn"
]
| 9 | 1 | 1 | [
"A007695",
"A011833"
]
| null | Svante Linusson (linusson(AT)math.kth.se) | 2011-09-03T11:53:29 | oeisdata/seq/A011/A011833.seq | ac5831d30befb8870aa61d7345cf74fc |
A011834 | f-vectors for 2-neighborly simplicial complexes on n+1 vertices. | [
"1",
"2",
"6",
"27",
"190",
"2246",
"48230",
"2016372",
"173567527",
"32121018248",
"13203989190379",
"12355576970413489",
"26815273007684770624",
"136972327635873480206735",
"1666402843785234768663681968"
]
| [
"nonn"
]
| 3 | 1 | 2 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011834.seq | 83de52d75db6cb9e3bfe1c2ff65c4368 |
A011835 | f-vectors for 3-neighborly simplicial complexes on n+2 vertices. | [
"1",
"2",
"7",
"43",
"471",
"9705",
"398663",
"34221167",
"6366566540",
"2641102182925",
"2498210880028303",
"5484438524509076715",
"28346990140510757039949",
"349039307360779249087131805",
"10340590252034005587340296182702"
]
| [
"nonn"
]
| 3 | 1 | 2 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011835.seq | 957023e3416b30ce1371117b654dbddb |
A011836 | f-vectors for 4-neighborly simplicial complexes on n+3 vertices. | [
"1",
"2",
"8",
"65",
"1060",
"35926",
"2631241",
"428585293",
"158639466203",
"135759833224363",
"272472900722736282",
"1298123934169543364022",
"14833579061932366416094404",
"410204812500962995190176804579"
]
| [
"nonn"
]
| 3 | 1 | 2 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011836.seq | 521b1b430893d13b27f8b33c1dcbdfe2 |
A011837 | f-vectors for 5-neighborly simplicial complexes on n+4 vertices. | [
"1",
"2",
"9",
"94",
"2189",
"115688",
"14192097",
"4098654791",
"2814676722153",
"4635201718175448",
"18445455348353453707",
"178643330908867827127930",
"4238739919964982588875223750",
"247905520612785780345354967724423"
]
| [
"nonn"
]
| 3 | 1 | 2 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011837.seq | 04c06e1e04027484fea8e54893a3cf12 |
A011838 | f-vectors for 6-neighborly simplicial complexes on n+5 vertices. | [
"1",
"2",
"10",
"131",
"4203",
"331201",
"64663638",
"31352026159",
"37776715520590",
"113247016996007525",
"846271790301299050986",
"15805460204542771053508658",
"740016466929577536283427715626"
]
| [
"nonn"
]
| 3 | 1 | 2 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011838.seq | bba6347794300bc5b8228d05178781a2 |
A011839 | f-vectors for 7-neighborly simplicial complexes on n+6 vertices. | [
"1",
"2",
"11",
"177",
"7592",
"859587",
"256174350",
"199469201193",
"402955577714030",
"2101126725683521037",
"28189314873080070171124",
"971578434976255623597312074",
"85994755027711704270764092393297"
]
| [
"nonn"
]
| 3 | 1 | 2 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011839.seq | 937f8680a2ddab89b09378daa8453ed2 |
A011840 | f-vectors for 8-neighborly simplicial complexes on n+7 vertices. | [
"1",
"2",
"12",
"233",
"13027",
"2054860",
"902972232",
"1088301119016",
"3548682190216501",
"30975390230263001230",
"718172054909597874684616",
"43989826242167986964609396098",
"7092859798789990177772152185478717"
]
| [
"nonn"
]
| 3 | 1 | 2 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011840.seq | 9863207e07502a22aa6ccd24aa5b988c |
A011841 | f-vectors for 9-neighborly simplicial complexes on n+8 vertices. | [
"1",
"2",
"13",
"300",
"21400",
"4582126",
"2883651027",
"5214558528621",
"26572504193848015",
"375710371221886207918",
"14564673083578280342811405",
"1534178714372102510213951291006"
]
| [
"nonn"
]
| 3 | 1 | 2 | null | null | Svante Linusson (linusson(AT)math.kth.se) | 2003-05-16T03:00:00 | oeisdata/seq/A011/A011841.seq | 8d4d1f4087d6d6c49892e6419bc533d5 |
A011842 | a(n) = floor(n*(n-1)*(n-2)/24). | [
"0",
"0",
"0",
"0",
"1",
"2",
"5",
"8",
"14",
"21",
"30",
"41",
"55",
"71",
"91",
"113",
"140",
"170",
"204",
"242",
"285",
"332",
"385",
"442",
"506",
"575",
"650",
"731",
"819",
"913",
"1015",
"1123",
"1240",
"1364",
"1496",
"1636",
"1785",
"1942",
"2109",
"2284",
"2470",
"2665",
"2870",
"3085",
"3311",
"3547",
"3795",
"4053",
"4324",
"4606",
"4900",
"5206",
"5525",
"5856",
"6201",
"6558",
"6930",
"7315",
"7714",
"8127",
"8555",
"8997",
"9455",
"9927",
"10416",
"10920"
]
| [
"nonn"
]
| 24 | 0 | 6 | [
"A011842",
"A011847",
"A011886"
]
| null | N. J. A. Sloane | 2024-10-21T04:36:26 | oeisdata/seq/A011/A011842.seq | 7dbce21bee68739e2673162664415c52 |
A011843 | a(n) = floor(binomial(n,5)/6). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"3",
"9",
"21",
"42",
"77",
"132",
"214",
"333",
"500",
"728",
"1031",
"1428",
"1938",
"2584",
"3391",
"4389",
"5608",
"7084",
"8855",
"10963",
"13455",
"16380",
"19792",
"23751",
"28318",
"33562",
"39556",
"46376",
"54105",
"62832",
"72649",
"83657"
]
| [
"nonn"
]
| 18 | 0 | 8 | [
"A011843",
"A011847"
]
| null | N. J. A. Sloane | 2023-06-13T09:24:08 | oeisdata/seq/A011/A011843.seq | b1eaf197e4bc74f85841d2e2c2d6919b |
A011844 | a(n) = floor(C(n,7)/8). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"4",
"15",
"41",
"99",
"214",
"429",
"804",
"1430",
"2431",
"3978",
"6298",
"9690",
"14535",
"21318",
"30644",
"43263",
"60087",
"82225",
"111003",
"148005",
"195097",
"254475",
"328696",
"420732",
"534006",
"672452",
"840565",
"1043460"
]
| [
"nonn",
"changed"
]
| 20 | 0 | 10 | [
"A011844",
"A011847"
]
| null | N. J. A. Sloane | 2025-07-08T02:40:30 | oeisdata/seq/A011/A011844.seq | ae380aafb17863eddccf0fecf77c5c77 |
A011845 | a(n) = floor( binomial(n,8)/9). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"5",
"18",
"55",
"143",
"333",
"715",
"1430",
"2701",
"4862",
"8398",
"13996",
"22610",
"35530",
"54479",
"81719",
"120175",
"173586",
"246675",
"345345",
"476905",
"650325",
"876525",
"1168700",
"1542684",
"2017356",
"2615091",
"3362260",
"4289780",
"5433721",
"6835972",
"8544965",
"10616471"
]
| [
"nonn",
"changed"
]
| 42 | 0 | 11 | [
"A000031",
"A001037",
"A011845",
"A011847",
"A028723",
"A051168"
]
| null | N. J. A. Sloane | 2025-07-08T02:40:36 | oeisdata/seq/A011/A011845.seq | 43235d11d94311e5eed38a2a35616a56 |
A011846 | a(n) = floor( binomial(n,9)/10 ). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"5",
"22",
"71",
"200",
"500",
"1144",
"2431",
"4862",
"9237",
"16796",
"29393",
"49742",
"81719",
"130750",
"204297",
"312455",
"468682",
"690690",
"1001500",
"1430715",
"2016007",
"2804880",
"3856710",
"5245125",
"7060746"
]
| [
"nonn",
"easy"
]
| 19 | 0 | 12 | [
"A011846",
"A011847"
]
| null | N. J. A. Sloane | 2025-02-24T11:47:42 | oeisdata/seq/A011/A011846.seq | e93af19872a14816e9f89424bbacb2d5 |
A011847 | Triangle of numbers read by rows: T(n,k) = floor( C(n,k)/(k+1) ), where k=0..n-1 and n >= 1. | [
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"2",
"2",
"1",
"1",
"2",
"3",
"2",
"1",
"1",
"3",
"5",
"5",
"3",
"1",
"1",
"3",
"7",
"8",
"7",
"3",
"1",
"1",
"4",
"9",
"14",
"14",
"9",
"4",
"1",
"1",
"4",
"12",
"21",
"25",
"21",
"12",
"4",
"1",
"1",
"5",
"15",
"30",
"42",
"42",
"30",
"15",
"5",
"1",
"1",
"5",
"18",
"41",
"66",
"77",
"66",
"41",
"18",
"5",
"1",
"1",
"6",
"22",
"55",
"99",
"132",
"132",
"99",
"55",
"22",
"6",
"1",
"1",
"6",
"26",
"71",
"143",
"214",
"245",
"214",
"143",
"71",
"26",
"6",
"1"
]
| [
"nonn",
"tabl"
]
| 77 | 1 | 8 | [
"A001840",
"A006918",
"A008619",
"A011795",
"A011797",
"A011842",
"A011843",
"A011844",
"A011845",
"A011846",
"A011847",
"A032169",
"A095718",
"A095719",
"A245558"
]
| null | N. J. A. Sloane | 2024-12-30T04:00:23 | oeisdata/seq/A011/A011847.seq | 63682d11f6bcb89abfb7b599d44faf6a |
A011848 | a(n) = floor(binomial(n, 2)/2). | [
"0",
"0",
"0",
"1",
"3",
"5",
"7",
"10",
"14",
"18",
"22",
"27",
"33",
"39",
"45",
"52",
"60",
"68",
"76",
"85",
"95",
"105",
"115",
"126",
"138",
"150",
"162",
"175",
"189",
"203",
"217",
"232",
"248",
"264",
"280",
"297",
"315",
"333",
"351",
"370",
"390",
"410",
"430",
"451",
"473",
"495",
"517",
"540",
"564",
"588",
"612",
"637",
"663",
"689",
"715",
"742",
"770",
"798"
]
| [
"nonn",
"easy"
]
| 156 | 0 | 5 | [
"A001107",
"A004524",
"A006720",
"A007318",
"A007742",
"A011848",
"A011857",
"A033954",
"A033991",
"A035608",
"A156859"
]
| null | N. J. A. Sloane, Dec 11 1996 | 2025-02-16T08:32:32 | oeisdata/seq/A011/A011848.seq | e35aea53c4c8e529052d68ce05898e39 |
A011849 | a(n) = floor(binomial(n,3)/3). | [
"0",
"0",
"0",
"0",
"1",
"3",
"6",
"11",
"18",
"28",
"40",
"55",
"73",
"95",
"121",
"151",
"186",
"226",
"272",
"323",
"380",
"443",
"513",
"590",
"674",
"766",
"866",
"975",
"1092",
"1218",
"1353",
"1498",
"1653",
"1818",
"1994",
"2181",
"2380",
"2590",
"2812",
"3046",
"3293",
"3553",
"3826"
]
| [
"nonn",
"easy"
]
| 33 | 0 | 6 | [
"A011849",
"A011857"
]
| null | N. J. A. Sloane | 2023-06-13T11:16:07 | oeisdata/seq/A011/A011849.seq | a7613a1f9724e48c7dac7ef2a5a2b054 |
A011850 | a(n) = floor(binomial(n,4)/4). | [
"0",
"0",
"0",
"0",
"0",
"1",
"3",
"8",
"17",
"31",
"52",
"82",
"123",
"178",
"250",
"341",
"455",
"595",
"765",
"969",
"1211",
"1496",
"1828",
"2213",
"2656",
"3162",
"3737",
"4387",
"5118",
"5937",
"6851",
"7866",
"8990",
"10230",
"11594",
"13090",
"14726",
"16511",
"18453",
"20562"
]
| [
"nonn",
"easy"
]
| 20 | 0 | 7 | [
"A011850",
"A011857"
]
| null | N. J. A. Sloane | 2017-08-07T23:46:38 | oeisdata/seq/A011/A011850.seq | 062cdf1edc5c0ad15c77c07dcfcff487 |
A011851 | a(n) = floor(binomial(n,5)/5). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"4",
"11",
"25",
"50",
"92",
"158",
"257",
"400",
"600",
"873",
"1237",
"1713",
"2325",
"3100",
"4069",
"5266",
"6729",
"8500",
"10626",
"13156",
"16146",
"19656",
"23751",
"28501",
"33982",
"40275",
"47467",
"55651",
"64926",
"75398",
"87179",
"100388",
"115151",
"131601",
"149879",
"170133",
"192519",
"217201",
"244351",
"274150"
]
| [
"nonn",
"easy"
]
| 27 | 0 | 8 | [
"A011851",
"A011857"
]
| null | N. J. A. Sloane | 2023-06-14T05:36:59 | oeisdata/seq/A011/A011851.seq | e356cce9bf1f79adef898f8586fb1ffd |
A011852 | a(n) = floor(binomial(n,6)/6). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"4",
"14",
"35",
"77",
"154",
"286",
"500",
"834",
"1334",
"2062",
"3094",
"4522",
"6460",
"9044",
"12435",
"16824",
"22432",
"29516",
"38371",
"49335",
"62790",
"79170",
"98962",
"122713",
"151032",
"184594",
"224150",
"270526",
"324632"
]
| [
"nonn"
]
| 17 | 0 | 9 | [
"A011852",
"A011857"
]
| null | N. J. A. Sloane | 2023-06-13T11:13:09 | oeisdata/seq/A011/A011852.seq | fa5a36138b8dab7bd3aaa784933e7dc4 |
A011853 | a(n) = floor( binomial(n,7)/7 ). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"5",
"17",
"47",
"113",
"245",
"490",
"919",
"1634",
"2778",
"4546",
"7198",
"11074",
"16611",
"24363",
"35022",
"49443",
"68671",
"93971",
"126861",
"169148",
"222968",
"290828",
"375653",
"480836",
"610292",
"768516",
"960645"
]
| [
"nonn",
"easy",
"changed"
]
| 23 | 0 | 10 | [
"A011797",
"A011853",
"A011857"
]
| null | N. J. A. Sloane | 2025-07-08T02:40:42 | oeisdata/seq/A011/A011853.seq | bac14c9b2f2077d8d986bf6d893cdeba |
A011854 | a(n) = floor(binomial(n,8)/8). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"5",
"20",
"61",
"160",
"375",
"804",
"1608",
"3038",
"5469",
"9447",
"15746",
"25436",
"39971",
"61289",
"91933",
"135196",
"195284",
"277509",
"388513",
"536518",
"731615",
"986090",
"1314787",
"1735519",
"2269525",
"2941977"
]
| [
"nonn"
]
| 18 | 0 | 11 | [
"A011854",
"A011857"
]
| null | N. J. A. Sloane | 2023-06-13T11:11:32 | oeisdata/seq/A011/A011854.seq | 16cc21d1b996cfa5c899265723ef77e1 |
A011855 | a(n) = floor(binomial(n,9)/9). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"6",
"24",
"79",
"222",
"556",
"1271",
"2701",
"5402",
"10264",
"18662",
"32658",
"55268",
"90798",
"145278",
"226997",
"347172",
"520758",
"767433",
"1112778",
"1589683",
"2240008",
"3116533",
"4285233",
"5827917",
"7845273"
]
| [
"nonn"
]
| 19 | 0 | 12 | [
"A011855",
"A011857"
]
| null | N. J. A. Sloane | 2023-06-13T11:10:34 | oeisdata/seq/A011/A011855.seq | d9ad371578cfadd87b3eed9d3d6dbdc5 |
A011856 | a(n) = floor(binomial(n,10)/10). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"6",
"28",
"100",
"300",
"800",
"1944",
"4375",
"9237",
"18475",
"35271",
"64664",
"114406",
"196125",
"326876",
"531173",
"843628",
"1312311",
"2003001",
"3004501",
"4435216",
"6451224",
"9256104",
"13112814",
"18357939"
]
| [
"nonn"
]
| 19 | 0 | 13 | [
"A011856",
"A011857"
]
| null | N. J. A. Sloane | 2025-02-24T12:10:25 | oeisdata/seq/A011/A011856.seq | 8d46731b87c7f6896a391aa94948aafb |
A011857 | Triangle of numbers [ C(n,k)/k ], k=1..n-1. | [
"2",
"3",
"1",
"4",
"3",
"1",
"5",
"5",
"3",
"1",
"6",
"7",
"6",
"3",
"1",
"7",
"10",
"11",
"8",
"4",
"1",
"8",
"14",
"18",
"17",
"11",
"4",
"1",
"9",
"18",
"28",
"31",
"25",
"14",
"5",
"1",
"10",
"22",
"40",
"52",
"50",
"35",
"17",
"5",
"1",
"11",
"27",
"55",
"82",
"92",
"77",
"47",
"20",
"6",
"1",
"12",
"33",
"73",
"123",
"158",
"154",
"113",
"61",
"24",
"6",
"1",
"13",
"39",
"95",
"178",
"257",
"286",
"245",
"160"
]
| [
"tabl",
"nonn",
"easy",
"changed"
]
| 10 | 2 | 1 | [
"A011847",
"A011848",
"A011849",
"A011850",
"A011851",
"A011852",
"A011853",
"A011854",
"A011855",
"A011856",
"A011857",
"A101687"
]
| null | N. J. A. Sloane | 2025-07-08T02:40:47 | oeisdata/seq/A011/A011857.seq | ac52cffaf04760433bed22e24861ee8e |
A011858 | a(n) = floor( n*(n-1)/5 ). | [
"0",
"0",
"0",
"1",
"2",
"4",
"6",
"8",
"11",
"14",
"18",
"22",
"26",
"31",
"36",
"42",
"48",
"54",
"61",
"68",
"76",
"84",
"92",
"101",
"110",
"120",
"130",
"140",
"151",
"162",
"174",
"186",
"198",
"211",
"224",
"238",
"252",
"266",
"281",
"296",
"312",
"328",
"344",
"361",
"378",
"396",
"414",
"432",
"451",
"470",
"490",
"510",
"530",
"551",
"572",
"594",
"616",
"638",
"661",
"684"
]
| [
"nonn",
"easy"
]
| 51 | 0 | 5 | [
"A011858",
"A130520"
]
| null | N. J. A. Sloane | 2024-12-21T13:25:18 | oeisdata/seq/A011/A011858.seq | 910448b73c5ba610c7e20fea20e9f962 |
A011859 | Normalized sequence of cumulants formed from moments in a quantum many-body problem at its critical point. | [
"-1",
"1",
"4",
"14",
"16",
"-400",
"-5312",
"-33040",
"134400",
"7141632",
"104530944",
"438163968",
"-19703033856",
"-615381651456",
"-8122606469120",
"54420468856832",
"5822016615940096",
"150504948558528512",
"1126972987747336192",
"-72753308251479212032"
]
| [
"sign"
]
| 9 | 1 | 3 | null | null | Nick Witte (nsw(AT)allegro.ph.unimelb.EDU.AU) | 2018-07-02T03:12:33 | oeisdata/seq/A011/A011859.seq | 9e13eded1b96e9e60aa8fe3e4011ca11 |
A011860 | Floor( n(n-1)/7 ). | [
"0",
"0",
"0",
"0",
"1",
"2",
"4",
"6",
"8",
"10",
"12",
"15",
"18",
"22",
"26",
"30",
"34",
"38",
"43",
"48",
"54",
"60",
"66",
"72",
"78",
"85",
"92",
"100",
"108",
"116",
"124",
"132",
"141",
"150",
"160",
"170",
"180",
"190",
"200",
"211",
"222",
"234",
"246",
"258",
"270",
"282",
"295",
"308",
"322",
"336",
"350",
"364",
"378",
"393",
"408",
"424",
"440",
"456",
"472",
"488",
"505"
]
| [
"nonn",
"easy",
"changed"
]
| 13 | 0 | 6 | null | null | N. J. A. Sloane | 2025-07-08T02:40:53 | oeisdata/seq/A011/A011860.seq | 4bc2c4340b7c279d52f345cd75d2bd59 |
A011861 | a(n) = floor(n(n-1)/8). | [
"0",
"0",
"0",
"0",
"1",
"2",
"3",
"5",
"7",
"9",
"11",
"13",
"16",
"19",
"22",
"26",
"30",
"34",
"38",
"42",
"47",
"52",
"57",
"63",
"69",
"75",
"81",
"87",
"94",
"101",
"108",
"116",
"124",
"132",
"140",
"148",
"157",
"166",
"175",
"185",
"195",
"205",
"215",
"225",
"236",
"247",
"258",
"270",
"282",
"294",
"306",
"318",
"331",
"344",
"357",
"371",
"385",
"399",
"413",
"427",
"442",
"457",
"472"
]
| [
"nonn"
]
| 22 | 0 | 6 | null | null | N. J. A. Sloane | 2022-09-08T08:44:37 | oeisdata/seq/A011/A011861.seq | 289f2053da5aa6c8d3c8130f3ba3d556 |
A011862 | a(n) = floor(n*(n-1)/9). | [
"0",
"0",
"0",
"0",
"1",
"2",
"3",
"4",
"6",
"8",
"10",
"12",
"14",
"17",
"20",
"23",
"26",
"30",
"34",
"38",
"42",
"46",
"51",
"56",
"61",
"66",
"72",
"78",
"84",
"90",
"96",
"103",
"110",
"117",
"124",
"132",
"140",
"148",
"156",
"164",
"173",
"182",
"191",
"200",
"210",
"220",
"230",
"240",
"250",
"261",
"272",
"283",
"294",
"306",
"318",
"330",
"342",
"354",
"367",
"380",
"393",
"406",
"420"
]
| [
"nonn",
"easy",
"changed"
]
| 13 | 0 | 6 | null | null | N. J. A. Sloane | 2025-07-08T02:40:59 | oeisdata/seq/A011/A011862.seq | 43b59759e3545c3588d87abd60599f39 |
A011863 | Nearest integer to (n/2)^4. | [
"0",
"0",
"1",
"5",
"16",
"39",
"81",
"150",
"256",
"410",
"625",
"915",
"1296",
"1785",
"2401",
"3164",
"4096",
"5220",
"6561",
"8145",
"10000",
"12155",
"14641",
"17490",
"20736",
"24414",
"28561",
"33215",
"38416",
"44205",
"50625",
"57720",
"65536",
"74120",
"83521",
"93789",
"104976",
"117135",
"130321",
"144590"
]
| [
"nonn",
"easy"
]
| 101 | 0 | 4 | [
"A000583",
"A002817",
"A011863",
"A019298",
"A106707",
"A212714",
"A219086"
]
| null | R. K. Guy | 2023-11-03T22:34:45 | oeisdata/seq/A011/A011863.seq | 3871497bdad004822fac8fb2590c1334 |
A011864 | a(n) = floor(n*(n - 1)/11). | [
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"3",
"5",
"6",
"8",
"10",
"12",
"14",
"16",
"19",
"21",
"24",
"27",
"31",
"34",
"38",
"42",
"46",
"50",
"54",
"59",
"63",
"68",
"73",
"79",
"84",
"90",
"96",
"102",
"108",
"114",
"121",
"127",
"134",
"141",
"149",
"156",
"164",
"172",
"180",
"188",
"196",
"205",
"213",
"222",
"231",
"241",
"250",
"260",
"270",
"280",
"290",
"300",
"311",
"321",
"332",
"343",
"355"
]
| [
"nonn",
"easy",
"changed"
]
| 25 | 0 | 7 | null | null | N. J. A. Sloane | 2025-07-08T02:41:05 | oeisdata/seq/A011/A011864.seq | 1daccc1880141d20029c140bb9162bfc |
A011865 | a(n) = floor( n*(n - 1)/12 ). | [
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"3",
"4",
"6",
"7",
"9",
"11",
"13",
"15",
"17",
"20",
"22",
"25",
"28",
"31",
"35",
"38",
"42",
"46",
"50",
"54",
"58",
"63",
"67",
"72",
"77",
"82",
"88",
"93",
"99",
"105",
"111",
"117",
"123",
"130",
"136",
"143",
"150",
"157",
"165",
"172",
"180",
"188",
"196",
"204",
"212",
"221",
"229",
"238",
"247",
"256",
"266",
"275",
"285",
"295",
"305",
"315",
"325",
"336"
]
| [
"nonn",
"easy"
]
| 21 | 0 | 7 | null | null | N. J. A. Sloane | 2024-09-02T08:37:34 | oeisdata/seq/A011/A011865.seq | 68709b71b64303a5ae2854cb75fbb150 |
A011866 | a(n) = floor(n*(n-1)/13). | [
"0",
"0",
"0",
"0",
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"8",
"10",
"12",
"14",
"16",
"18",
"20",
"23",
"26",
"29",
"32",
"35",
"38",
"42",
"46",
"50",
"54",
"58",
"62",
"66",
"71",
"76",
"81",
"86",
"91",
"96",
"102",
"108",
"114",
"120",
"126",
"132",
"138",
"145",
"152",
"159",
"166",
"173",
"180",
"188",
"196",
"204",
"212",
"220",
"228",
"236",
"245",
"254",
"263",
"272",
"281",
"290",
"300",
"310"
]
| [
"nonn",
"easy",
"changed"
]
| 24 | 0 | 7 | null | null | N. J. A. Sloane | 2025-07-08T02:41:12 | oeisdata/seq/A011/A011866.seq | 7c4d85e148642d5680935f2d958a3fe0 |
A011867 | a(n) = floor(n*(n-1)/14). | [
"0",
"0",
"0",
"0",
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"9",
"11",
"13",
"15",
"17",
"19",
"21",
"24",
"27",
"30",
"33",
"36",
"39",
"42",
"46",
"50",
"54",
"58",
"62",
"66",
"70",
"75",
"80",
"85",
"90",
"95",
"100",
"105",
"111",
"117",
"123",
"129",
"135",
"141",
"147",
"154",
"161",
"168",
"175",
"182",
"189",
"196",
"204",
"212",
"220",
"228",
"236",
"244",
"252",
"261",
"270",
"279",
"288",
"297"
]
| [
"nonn",
"easy"
]
| 35 | 0 | 7 | [
"A008725",
"A011867",
"A174738"
]
| null | N. J. A. Sloane | 2022-09-08T08:44:37 | oeisdata/seq/A011/A011867.seq | 23c4ee80b411a09ec657965705497be6 |
A011868 | a(n) = floor(n*(n-1)/15). | [
"0",
"0",
"0",
"0",
"0",
"1",
"2",
"2",
"3",
"4",
"6",
"7",
"8",
"10",
"12",
"14",
"16",
"18",
"20",
"22",
"25",
"28",
"30",
"33",
"36",
"40",
"43",
"46",
"50",
"54",
"58",
"62",
"66",
"70",
"74",
"79",
"84",
"88",
"93",
"98",
"104",
"109",
"114",
"120",
"126",
"132",
"138",
"144",
"150",
"156",
"163",
"170",
"176",
"183",
"190",
"198",
"205",
"212",
"220",
"228",
"236",
"244",
"252"
]
| [
"nonn",
"easy",
"changed"
]
| 23 | 0 | 7 | null | null | N. J. A. Sloane | 2025-07-08T02:41:18 | oeisdata/seq/A011/A011868.seq | 1b551314b28b5f19451216f0206b807b |
A011869 | a(n) = floor(n*(n-1)/16). | [
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"3",
"4",
"5",
"6",
"8",
"9",
"11",
"13",
"15",
"17",
"19",
"21",
"23",
"26",
"28",
"31",
"34",
"37",
"40",
"43",
"47",
"50",
"54",
"58",
"62",
"66",
"70",
"74",
"78",
"83",
"87",
"92",
"97",
"102",
"107",
"112",
"118",
"123",
"129",
"135",
"141",
"147",
"153",
"159",
"165",
"172",
"178",
"185",
"192",
"199",
"206",
"213",
"221",
"228",
"236",
"244",
"252",
"260"
]
| [
"nonn",
"changed"
]
| 25 | 0 | 8 | [
"A011861",
"A011869"
]
| null | N. J. A. Sloane | 2025-07-08T02:41:24 | oeisdata/seq/A011/A011869.seq | e5455576825b1006dd41d5da8245ca41 |
A011870 | a(n) = floor(n*(n-1)/17). | [
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"9",
"10",
"12",
"14",
"16",
"18",
"20",
"22",
"24",
"27",
"29",
"32",
"35",
"38",
"41",
"44",
"47",
"51",
"54",
"58",
"62",
"66",
"70",
"74",
"78",
"82",
"87",
"91",
"96",
"101",
"106",
"111",
"116",
"121",
"127",
"132",
"138",
"144",
"150",
"156",
"162",
"168",
"174",
"181",
"187",
"194",
"201",
"208",
"215",
"222",
"229",
"237",
"244",
"252"
]
| [
"nonn"
]
| 13 | 0 | 8 | null | null | N. J. A. Sloane | 2021-12-27T22:08:11 | oeisdata/seq/A011/A011870.seq | fc421d14b3d4a8156ef6a3feb4e21f05 |
A011871 | [ n(n-1)/18 ]. | [
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"10",
"11",
"13",
"15",
"17",
"19",
"21",
"23",
"25",
"28",
"30",
"33",
"36",
"39",
"42",
"45",
"48",
"51",
"55",
"58",
"62",
"66",
"70",
"74",
"78",
"82",
"86",
"91",
"95",
"100",
"105",
"110",
"115",
"120",
"125",
"130",
"136",
"141",
"147",
"153",
"159",
"165",
"171",
"177",
"183",
"190",
"196",
"203",
"210",
"217",
"224",
"231",
"238"
]
| [
"nonn",
"easy"
]
| 19 | 0 | 8 | null | null | N. J. A. Sloane, Dec 11 1996 | 2015-07-30T14:53:26 | oeisdata/seq/A011/A011871.seq | 27b6614305251b77d707ba6710054731 |
A011872 | [ n(n-1)/19 ]. | [
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"2",
"3",
"4",
"5",
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"180",
"186",
"192",
"199",
"205",
"212",
"218",
"225",
"232"
]
| [
"nonn",
"easy",
"changed"
]
| 16 | 0 | 8 | null | null | N. J. A. Sloane | 2025-07-08T02:41:30 | oeisdata/seq/A011/A011872.seq | b91993379ecf5602260e6047b1ae7960 |
A011873 | a(n) = floor(n(n-1)/20). | [
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"2",
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"165",
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]
| [
"nonn",
"easy",
"changed"
]
| 26 | 0 | 8 | null | null | N. J. A. Sloane | 2025-07-08T02:41:36 | oeisdata/seq/A011/A011873.seq | fae0151c9cbab5a02749e6233d7455c3 |
A011874 | a(n) = floor(n*(n-1)/21). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"2",
"2",
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"157",
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]
| [
"nonn",
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]
| 20 | 0 | 8 | null | null | N. J. A. Sloane | 2023-02-24T11:37:49 | oeisdata/seq/A011/A011874.seq | 3a3076f4b3c9cf5d9c8d990d2bee167c |
A011875 | a(n) = floor(n*(n-1)/22). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"3",
"4",
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"166",
"171",
"177",
"183",
"189",
"195",
"201",
"207"
]
| [
"nonn",
"easy"
]
| 16 | 0 | 9 | null | null | N. J. A. Sloane | 2025-04-18T09:53:45 | oeisdata/seq/A011/A011875.seq | 2c30da255bbf55261ee87d97fc72d8a8 |
A011876 | [ n(n-1)/23 ]. | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"3",
"3",
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"164",
"169",
"175",
"180",
"186",
"192",
"198"
]
| [
"nonn",
"easy",
"changed"
]
| 16 | 0 | 9 | null | null | N. J. A. Sloane | 2025-07-08T02:41:42 | oeisdata/seq/A011/A011876.seq | 154fe83349cbc0b01f26860fac448158 |
A011877 | a(n) = floor(n*(n-1)/24). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"3",
"3",
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"157",
"162",
"168",
"173",
"178",
"184",
"189"
]
| [
"nonn",
"easy",
"changed"
]
| 13 | 0 | 9 | null | null | N. J. A. Sloane | 2025-07-08T02:41:48 | oeisdata/seq/A011/A011877.seq | 40c89ca0d68d95f25dafcea26b46bc1d |
A011878 | a(n) = floor( n(n-1)/25 ). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
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"123",
"127",
"132",
"136",
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"146",
"151"
]
| [
"nonn",
"easy",
"changed"
]
| 22 | 0 | 9 | null | null | N. J. A. Sloane | 2025-07-08T02:41:54 | oeisdata/seq/A011/A011878.seq | 62be8772f2d125f86526cc2ab8f3195f |
A011879 | a(n) = floor( n(n-1)/26 ). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
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"127",
"131",
"136",
"140",
"145"
]
| [
"nonn",
"easy",
"changed"
]
| 22 | 0 | 9 | null | null | N. J. A. Sloane | 2025-07-08T02:42:00 | oeisdata/seq/A011/A011879.seq | e50e4a3540ab3ec0b009c20040cc0c94 |
A011880 | a(n) = floor(n*(n-1)/27). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"2",
"3",
"4",
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"140",
"144",
"149",
"154",
"158",
"163",
"168",
"173"
]
| [
"nonn",
"easy"
]
| 22 | 0 | 9 | null | null | N. J. A. Sloane | 2022-09-28T08:13:35 | oeisdata/seq/A011/A011880.seq | 1d0cc1affc1ad4e9bf1398264e5a7220 |
A011881 | a(n) = floor(n*(n-1)/28). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"2",
"3",
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"94",
"98",
"102",
"106",
"110",
"114",
"118"
]
| [
"nonn",
"easy",
"changed"
]
| 16 | 0 | 9 | null | null | N. J. A. Sloane | 2025-07-08T02:42:06 | oeisdata/seq/A011/A011881.seq | d3c1bc695e43937b9e64246bfb7017de |
A011882 | [ n(n-1)/29 ]. | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"1",
"2",
"3",
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"139",
"143",
"147",
"152",
"157",
"161",
"166",
"171"
]
| [
"nonn",
"changed"
]
| 14 | 0 | 10 | null | null | N. J. A. Sloane | 2025-07-08T02:42:12 | oeisdata/seq/A011/A011882.seq | 3ff0a984f509ee9549fa21e4df49c686 |
A011883 | a(n) = floor(n*(n-1)/30). | [
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"1",
"2",
"3",
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"134",
"138",
"143",
"147",
"151",
"156",
"161",
"165"
]
| [
"nonn",
"easy"
]
| 22 | 0 | 10 | null | null | N. J. A. Sloane | 2022-09-08T08:44:37 | oeisdata/seq/A011/A011883.seq | af26e7265f2823c0a27c364929b3706f |
A011884 | Floor(n(n - 1)/31). | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"2",
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"130",
"134",
"138",
"142",
"146",
"151",
"155",
"160"
]
| [
"nonn",
"easy"
]
| 20 | 0 | 10 | null | null | N. J. A. Sloane, Dec 11 1996 | 2022-09-08T08:44:37 | oeisdata/seq/A011/A011884.seq | 28d0a61a3028d6db12bea0ef907b77c4 |
A011885 | [ n(n-1)/32 ]. | [
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"2",
"2",
"3",
"4",
"4",
"5",
"6",
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"122",
"126",
"130",
"134",
"138",
"142",
"146",
"150"
]
| [
"nonn",
"changed"
]
| 11 | 0 | 10 | null | null | N. J. A. Sloane | 2025-07-08T02:42:17 | oeisdata/seq/A011/A011885.seq | 8ef5498ee4835ad80368d264ef1418b3 |
A011886 | a(n) = floor(n*(n-1)*(n-2)/4). | [
"0",
"0",
"0",
"1",
"6",
"15",
"30",
"52",
"84",
"126",
"180",
"247",
"330",
"429",
"546",
"682",
"840",
"1020",
"1224",
"1453",
"1710",
"1995",
"2310",
"2656",
"3036",
"3450",
"3900",
"4387",
"4914",
"5481",
"6090",
"6742",
"7440",
"8184",
"8976",
"9817",
"10710",
"11655",
"12654",
"13708",
"14820",
"15990",
"17220",
"18511",
"19866",
"21285"
]
| [
"nonn",
"easy"
]
| 31 | 0 | 5 | [
"A000292",
"A007290",
"A007531",
"A011842",
"A011849",
"A011886",
"A011887",
"A011889",
"A011890",
"A011891",
"A011892",
"A011893",
"A011894",
"A011895",
"A011896",
"A011897",
"A011898",
"A011899",
"A011901",
"A011902",
"A011903",
"A011904",
"A011905",
"A011907",
"A011908",
"A011909",
"A011910",
"A011911",
"A011912",
"A011913",
"A135503"
]
| null | N. J. A. Sloane | 2024-10-10T05:25:51 | oeisdata/seq/A011/A011886.seq | a41c9ac9ae85a5e6c6963309a99fef82 |
A011887 | a(n) = floor( n*(n-1)*(n-2)/5 ). | [
"0",
"0",
"0",
"1",
"4",
"12",
"24",
"42",
"67",
"100",
"144",
"198",
"264",
"343",
"436",
"546",
"672",
"816",
"979",
"1162",
"1368",
"1596",
"1848",
"2125",
"2428",
"2760",
"3120",
"3510",
"3931",
"4384",
"4872",
"5394",
"5952",
"6547",
"7180",
"7854",
"8568",
"9324",
"10123",
"10966"
]
| [
"nonn",
"easy"
]
| 22 | 0 | 5 | [
"A011886",
"A011887"
]
| null | N. J. A. Sloane | 2024-10-17T08:25:16 | oeisdata/seq/A011/A011887.seq | 360ca8ae687b0ba047b6b2bbb8a11e69 |
A011888 | Partial sums of A011863. | [
"0",
"1",
"6",
"22",
"61",
"142",
"292",
"548",
"958",
"1583",
"2498",
"3794",
"5579",
"7980",
"11144",
"15240",
"20460",
"27021",
"35166",
"45166",
"57321",
"71962",
"89452",
"110188",
"134602",
"163163",
"196378",
"234794",
"278999",
"329624",
"387344",
"452880"
]
| [
"nonn",
"easy"
]
| 17 | 0 | 3 | [
"A011863",
"A011888"
]
| null | R. K. Guy | 2024-02-07T12:34:01 | oeisdata/seq/A011/A011888.seq | 87c4fab86882a4213b1f716b624e957d |
A011889 | a(n) = floor(n*(n-1)*(n-2)/7). | [
"0",
"0",
"0",
"0",
"3",
"8",
"17",
"30",
"48",
"72",
"102",
"141",
"188",
"245",
"312",
"390",
"480",
"582",
"699",
"830",
"977",
"1140",
"1320",
"1518",
"1734",
"1971",
"2228",
"2507",
"2808",
"3132",
"3480",
"3852",
"4251",
"4676",
"5129",
"5610",
"6120",
"6660",
"7230",
"7833",
"8468",
"9137",
"9840",
"10578",
"11352",
"12162",
"13011",
"13898",
"14825",
"15792",
"16800"
]
| [
"nonn",
"easy"
]
| 31 | 0 | 5 | [
"A011886",
"A011889"
]
| null | N. J. A. Sloane | 2024-10-10T05:22:20 | oeisdata/seq/A011/A011889.seq | 87cc4bfff16caa524de41c97bed60584 |
A011890 | a(n) = floor( n*(n-1)*(n-2)/8 ). | [
"0",
"0",
"0",
"0",
"3",
"7",
"15",
"26",
"42",
"63",
"90",
"123",
"165",
"214",
"273",
"341",
"420",
"510",
"612",
"726",
"855",
"997",
"1155",
"1328",
"1518",
"1725",
"1950",
"2193",
"2457",
"2740",
"3045",
"3371",
"3720",
"4092",
"4488",
"4908",
"5355",
"5827",
"6327",
"6854",
"7410",
"7995",
"8610",
"9255",
"9933",
"10642",
"11385",
"12161",
"12972",
"13818",
"14700"
]
| [
"nonn"
]
| 19 | 0 | 5 | [
"A011886",
"A011890"
]
| null | N. J. A. Sloane | 2024-10-07T14:06:48 | oeisdata/seq/A011/A011890.seq | 74a498c42296a87abe990a5ba2680ab2 |
A011891 | a(n) = floor(n*(n-1)*(n-2)/9). | [
"0",
"0",
"0",
"0",
"2",
"6",
"13",
"23",
"37",
"56",
"80",
"110",
"146",
"190",
"242",
"303",
"373",
"453",
"544",
"646",
"760",
"886",
"1026",
"1180",
"1349",
"1533",
"1733",
"1950",
"2184",
"2436",
"2706",
"2996",
"3306",
"3637",
"3989",
"4363",
"4760",
"5180",
"5624",
"6092",
"6586",
"7106",
"7653",
"8227",
"8829",
"9460",
"10120",
"10810",
"11530"
]
| [
"nonn",
"easy"
]
| 33 | 0 | 5 | [
"A011886",
"A011891"
]
| null | N. J. A. Sloane | 2025-04-19T10:35:12 | oeisdata/seq/A011/A011891.seq | bdd3b3ba0aed2a8410e7db80400fc2a1 |
A011892 | a(n) = floor( n*(n-1)*(n-2)/10 ). | [
"0",
"0",
"0",
"0",
"2",
"6",
"12",
"21",
"33",
"50",
"72",
"99",
"132",
"171",
"218",
"273",
"336",
"408",
"489",
"581",
"684",
"798",
"924",
"1062",
"1214",
"1380",
"1560",
"1755",
"1965",
"2192",
"2436",
"2697",
"2976",
"3273",
"3590",
"3927",
"4284",
"4662",
"5061",
"5483",
"5928",
"6396",
"6888",
"7404",
"7946",
"8514",
"9108",
"9729",
"10377",
"11054",
"11760"
]
| [
"nonn",
"easy"
]
| 29 | 0 | 5 | [
"A011886",
"A011892"
]
| null | N. J. A. Sloane | 2024-10-10T05:20:40 | oeisdata/seq/A011/A011892.seq | d701a9b31cef97161c528ae9152bba45 |
A011893 | a(n) = floor( n*(n-1)*(n-2)/11 ). | [
"0",
"0",
"0",
"0",
"2",
"5",
"10",
"19",
"30",
"45",
"65",
"90",
"120",
"156",
"198",
"248",
"305",
"370",
"445",
"528",
"621",
"725",
"840",
"966",
"1104",
"1254",
"1418",
"1595",
"1786",
"1993",
"2214",
"2451",
"2705",
"2976",
"3264",
"3570",
"3894",
"4238",
"4601",
"4984",
"5389",
"5814",
"6261",
"6731",
"7224",
"7740",
"8280",
"8844",
"9434",
"10049",
"10690"
]
| [
"nonn",
"easy"
]
| 28 | 0 | 5 | [
"A011886",
"A011893"
]
| null | N. J. A. Sloane | 2024-10-10T05:23:09 | oeisdata/seq/A011/A011893.seq | 3901bbbcf4fcaa2ea31e341136446a4a |
A011894 | a(n) = floor(n*(n-1)*(n-2)/12). | [
"0",
"0",
"0",
"0",
"2",
"5",
"10",
"17",
"28",
"42",
"60",
"82",
"110",
"143",
"182",
"227",
"280",
"340",
"408",
"484",
"570",
"665",
"770",
"885",
"1012",
"1150",
"1300",
"1462",
"1638",
"1827",
"2030",
"2247",
"2480",
"2728",
"2992",
"3272",
"3570",
"3885",
"4218",
"4569",
"4940",
"5330",
"5740",
"6170",
"6622",
"7095",
"7590",
"8107",
"8648",
"9212",
"9800"
]
| [
"nonn",
"easy"
]
| 55 | 0 | 5 | [
"A011886",
"A011894"
]
| null | N. J. A. Sloane | 2025-02-16T08:32:32 | oeisdata/seq/A011/A011894.seq | 4873614710e99c0670f0b5fa3237e92c |
A011895 | a(n) = floor(n*(n-1)*(n-2)/13). | [
"0",
"0",
"0",
"0",
"1",
"4",
"9",
"16",
"25",
"38",
"55",
"76",
"101",
"132",
"168",
"210",
"258",
"313",
"376",
"447",
"526",
"613",
"710",
"817",
"934",
"1061",
"1200",
"1350",
"1512",
"1686",
"1873",
"2074",
"2289",
"2518",
"2761",
"3020",
"3295",
"3586",
"3893",
"4218",
"4560",
"4920",
"5298",
"5695",
"6112",
"6549",
"7006",
"7483"
]
| [
"nonn",
"easy"
]
| 20 | 0 | 6 | null | null | N. J. A. Sloane | 2022-09-08T08:44:37 | oeisdata/seq/A011/A011895.seq | 9dfaf1537231efa36f68ffb59eccbc48 |
A011896 | a(n) = floor( n*(n-1)*(n-2)/14 ). | [
"0",
"0",
"0",
"0",
"1",
"4",
"8",
"15",
"24",
"36",
"51",
"70",
"94",
"122",
"156",
"195",
"240",
"291",
"349",
"415",
"488",
"570",
"660",
"759",
"867",
"985",
"1114",
"1253",
"1404",
"1566",
"1740",
"1926",
"2125",
"2338",
"2564",
"2805",
"3060",
"3330",
"3615",
"3916",
"4234",
"4568",
"4920",
"5289",
"5676",
"6081",
"6505",
"6949",
"7412",
"7896"
]
| [
"nonn"
]
| 19 | 0 | 6 | [
"A011886",
"A011896",
"A055610"
]
| null | N. J. A. Sloane | 2024-10-17T15:48:22 | oeisdata/seq/A011/A011896.seq | 2764f1c127fff043744ea7c47087f0ca |
A011897 | a(n) = floor(n*(n-1)*(n-2)/15). | [
"0",
"0",
"0",
"0",
"1",
"4",
"8",
"14",
"22",
"33",
"48",
"66",
"88",
"114",
"145",
"182",
"224",
"272",
"326",
"387",
"456",
"532",
"616",
"708",
"809",
"920",
"1040",
"1170",
"1310",
"1461",
"1624",
"1798",
"1984",
"2182",
"2393",
"2618",
"2856",
"3108",
"3374",
"3655",
"3952",
"4264",
"4592"
]
| [
"nonn",
"easy"
]
| 29 | 0 | 6 | [
"A011886",
"A011897"
]
| null | N. J. A. Sloane | 2024-10-17T08:25:39 | oeisdata/seq/A011/A011897.seq | c19589534d9da2fcf93c295861e28378 |
A011898 | a(n) = floor(n*(n-1)*(n-2)/16). | [
"0",
"0",
"0",
"0",
"1",
"3",
"7",
"13",
"21",
"31",
"45",
"61",
"82",
"107",
"136",
"170",
"210",
"255",
"306",
"363",
"427",
"498",
"577",
"664",
"759",
"862",
"975",
"1096",
"1228",
"1370",
"1522",
"1685",
"1860",
"2046",
"2244",
"2454",
"2677",
"2913",
"3163",
"3427",
"3705",
"3997",
"4305"
]
| [
"nonn",
"easy"
]
| 26 | 0 | 6 | [
"A011886",
"A011898"
]
| null | N. J. A. Sloane | 2024-10-17T08:25:43 | oeisdata/seq/A011/A011898.seq | ce9772532e13ed3ef648aa314a93ed08 |
A011899 | a(n) = floor(n*(n-1)*(n-2)/17). | [
"0",
"0",
"0",
"0",
"1",
"3",
"7",
"12",
"19",
"29",
"42",
"58",
"77",
"100",
"128",
"160",
"197",
"240",
"288",
"342",
"402",
"469",
"543",
"625",
"714",
"811",
"917",
"1032",
"1156",
"1289",
"1432",
"1586",
"1750",
"1925",
"2112",
"2310",
"2520",
"2742",
"2977",
"3225",
"3487",
"3762",
"4051"
]
| [
"nonn",
"easy"
]
| 26 | 0 | 6 | [
"A007531",
"A011886",
"A011899"
]
| null | N. J. A. Sloane | 2024-10-17T08:25:53 | oeisdata/seq/A011/A011899.seq | 2b372bc67f9af623f0d17a6d3132a626 |
A011900 | a(n) = 6*a(n-1) - a(n-2) - 2 with a(0) = 1, a(1) = 3. | [
"1",
"3",
"15",
"85",
"493",
"2871",
"16731",
"97513",
"568345",
"3312555",
"19306983",
"112529341",
"655869061",
"3822685023",
"22280241075",
"129858761425",
"756872327473",
"4411375203411",
"25711378892991",
"149856898154533",
"873430010034205",
"5090723162050695",
"29670908962269963",
"172934730611569081"
]
| [
"nonn",
"easy"
]
| 125 | 0 | 2 | [
"A000194",
"A001109",
"A001541",
"A001653",
"A002024",
"A006062",
"A011900",
"A011906",
"A029549",
"A046090",
"A053141",
"A075528",
"A156035"
]
| null | Mario Velucchi (mathchess(AT)velucchi.it) | 2024-10-17T08:25:57 | oeisdata/seq/A011/A011900.seq | f083c7e19de79cf9710f9d6d28df96e1 |
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