id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A207499
[ 25, 625, 3355, 17911, 122061, 804887, 5715255, 40046975, 287772089, 2061595205, 14914823863, 107929360177, 784430935831, 5706698690103, 41607085900821, 303627706072811, 2218432129234439, 16220034510311324, 118680071632234050 ]
[ "nonn" ]
A289721
[ 1, 9, 45, 135, 306, 585, 999, 1575, 2340, 3321, 4545, 6039, 7830, 9945, 12411, 15255, 18504, 22185, 26325, 30951, 36090, 41769, 48015, 54855, 62316, 70425, 79209, 88695, 98910, 109881, 121635, 134199, 147600, 161865, 177021, 193095, 210114, 2...
[ "nonn", "easy" ]
A345738
[ 9, 0, 1, 4, 3, 1, 6, 9, 4, 2, 4, 5, 4, 2, 8, 2, 3, 1, 8, 1, 4, 5, 3, 6, 4, 3, 9, 6, 8, 1, 8, 1, 8, 5, 6, 1, 7, 9, 7, 0, 5, 1, 5, 9, 9, 4, 5, 2, 5, 8, 7, 4, 3, 8, 0, 1, 7, 3, 3, 7, 8, 2, 6, 3...
[ "nonn", "cons" ]
A082665
[ 1, 7, 4, 1, 0, 4, 5, 5, 5, 1, 6, 3, 8, 4, 3, 6, 9, 1, 3, 0, 2, 5, 5, 0, 1, 8, 7, 5, 1, 1, 8, 8, 9, 3, 0, 4, 0, 8, 0, 7, 1, 8, 0, 0, 4, 7, 2, 8, 4, 3, 3, 0, 0, 4, 2, 5, 7, 1, 2, 4, 1, 1, 9, 4...
[ "nonn", "cons" ]
A282433
[ 1, -2520, 2457000, -1113204960, 199879986600, 4992350445936, -3054519828108000, -316433406335739840, -15444821445342228000, -469944493113793900000, -9.973874479528787e+21, -1.5821133778222616e+23, -1.9729322248932214e+24 ]
[ "sign" ]
A252626
[ 405044, 5013608, 118551272, 2894745288, 72359809802, 1811913699224, 45371704729062, 1137317580721148, 28509333379628144, 714577961821004800, 17911976379170154000, 448990730607000500000, 1.1254523930303305e+22 ]
[ "nonn" ]
A183037
[ 2, 8, 2, 24, 2, 8, 2, 64, 2, 8, 2, 24, 2, 8, 2, 160, 2, 8, 2, 24, 2, 8, 2, 64, 2, 8, 2, 24, 2, 8, 2, 384, 2, 8, 2, 24, 2, 8, 2, 64, 2, 8, 2, 24, 2, 8, 2, 160, 2, 8, 2, 24, 2, 8, 2, 64, 2, 8, 2, 24, ...
[ "nonn" ]
A345627
[ 4157156, 4492410, 4510461, 4915538, 4948274, 5005474, 5015506, 5179747, 5219655, 5252477, 5739988, 5756794, 6323426, 6326519, 6382443, 6423394, 6654999, 6705284, 6793170, 6861218, 7101038, 7147645, 7147656, 7148679, 7266240, 7280391, 7283268, 7314187, 7413493 ...
[ "nonn" ]
A131618
[ 0, 1, 2, 3, 4, 6, 7, 8, 9, 22, 33, 34, 38, 46, 49, 75, 106 ]
[ "base", "fini", "nonn" ]
A078074
[ 1, 2, 1, 16, 1, 1, 3, 1, 5, 17, 1, 5, 2, 10, 3, 2, 14, 4, 19, 2, 3, 1, 20, 1, 1, 1, 3, 4, 1, 1, 5, 1, 1, 7, 1, 5, 3, 2, 1, 1, 1, 2, 16, 1, 2, 31, 3, 1, 2, 1, 2, 27, 11, 1, 27, 6, 6, 1, 1, 10, 1, ...
[ "nonn", "cofr" ]
A009440
[ 16, 212, 318, 424, 530, 636, 742, 848, 954, 1060, 1166, 1272, 1378, 1484, 1590, 1696, 17102, 18108, 19114, 20120, 21126, 22132, 23138, 24144, 25150, 26156, 27162, 28168, 29174, 30180, 31186, 32192, 33198, 34204, 35210, 36216, 37222, 38228, ...
[ "nonn", "base", "less", "easy" ]
A026873
[ 1, 6, 29, 131, 576, 2505, 10857, 47081, 204724, 893766, 3920310, 17283214, 76596745, 341264480, 1528405584, 6880122182, 31123426923, 141456560459, 645811464667, 2960966353657, 13630215685869, 62981140857061, 292049203818249 ]
[ "nonn" ]
A375680
[ 1, 0, 0, 12, 0, 120, 2160, 3360, 120960, 1632960, 9979200, 255467520, 3592512000, 45664819200, 1070840010240, 18027225216000, 340344048844800, 8174882722406400, 169308486085939200, 4019018956285133000, 104511967278630910000, 2.6062733085037607e+21 ]
[ "nonn" ]
A000868
[ 4, 21, 1531, 44782251, 96076794891512500, 8.861519971899439e+35, 1.5077094952775545e+74 ]
[ "nonn" ]
A297913
[ 1, 301, 481, 6044, 86201, 1084333, 15983426, 223362153, 3195010015, 45730653939, 652203954423, 9331059855942, 133396414344833, 1907203119726288, 27271253989660816, 389937374066207170, 5575659398081671000 ]
[ "nonn" ]
A273922
[ 0, 0, 0, 0, 0, 6, 42, 715 ]
[ "nonn", "hard", "more" ]
A334734
[ 1, 16, 648, 55296, 207360000, 10749542400, 23044331520000, 220242357780480000, 5.780040437590917e+21, 3.5388002679128064e+24, 1.1539850733650265e+29, 5.264387585885382e+33, 1.8358507184428864e+36 ]
[ "nonn", "frac" ]
A133866
[ 1, 1, 1, 4, 1, 5, 7, 1, 4, 0, 8, 7, 1, 9, 3, 0, 0, 8, 7, 3, 0, 0, 5, 2, 5, 1, 7, 8, 1, 6, 9, 2, 0, 3, 9, 0, 3, 9, 5, 4, 1, 0, 1, 3, 7, 6, 0, 4, 9, 3, 7, 5, 5, 9, 5, 3, 3, 7, 3, 7, 0, 5, 5, 5...
[ "nonn", "cons" ]
A138013
[ 1, 1, 3, 17, 146, 1694, 24834, 440586, 9180800, 219829536, 5948287560, 179508872520, 5978006444112, 217772950035120, 8614798644364080, 367768502385434600, 16852524904388585000, 825075552824125300000, 4.2981992589364755e+22, 2.3739674883944577e+24 ]
[ "nonn", "changed" ]
A352108
[ 1, 20, 39, 75, 115, 135, 155, 175, 176, 184, 204, 215, 264, 567, 684, 704, 725, 791, 846, 872, 1089, 1104, 1115, 1134, 1183, 1184, 1211, 1224, 1407, 1575, 1840, 1880, 2064, 2075, 2151, 2191, 2232, 2259, 2260, 2415, 2529, 2583, 2624,...
[ "nonn", "base" ]
A062935
[ 2, 3, 7, 121 ]
[ "nonn", "base" ]
A297414
[ 1, 4, 9, 12, 25, 36, 40, 52, 80, 92, 124, 150, 208, 306, 361, 630, 656, 1648, 1780, 2508, 3300, 3540, 5728, 6260, 6450, 7500, 10820, 12656, 14076, 14132, 18836, 20960, 23456, 24272, 35280, 43136 ]
[ "nonn" ]
A347236
[ 1, 1, 2, 7, 2, 2, 4, 13, 19, 2, 2, 14, 4, 4, 4, 55, 2, 19, 4, 14, 8, 2, 6, 26, 39, 4, 68, 28, 2, 4, 6, 133, 4, 2, 8, 133, 4, 4, 8, 26, 2, 8, 4, 14, 38, 6, 6, 110, 93, 39, 4, 28, 6, 68, 4, 52, 8, 2, 2,...
[ "nonn", "mult" ]
A324930
[ 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 2, 0, 0, 1, 0, 1, 2, 0, 2, 1, 0, 0, 1, 1, 1, 0, 1, 2, 1, 0, 1, 0, 1, 1, 2, 0, 2, 1, 1, 2, 2, 0, 0, 2, 2, 1, 0, 0, 2, 0, 0, 1, 1, 1, 2, 1, 0, 0...
[ "nonn" ]
A122190
[ 1, 1, 1, 2, 2, 0, 1, 2, 0, 2, 2, 1, 1, 2, 0, 2, 2, 0, 2, 0, 1, 2, 2, 0, 2, 2, 0, 2, 2, 2, 1, 1, 0, 0, 2, 0, 2, 2, 2, 2, 0, 0, 3, 2, 0, 2, 2, 0, 2, 2, 0, 2, 0, 0, 0, 4, 1, 2, 2, 0, 2, 1, 0, 0...
[ "nonn", "easy" ]
A351811
[ 1, 1, 11, 101, 971, 10621, 133251, 1872261, 28840251, 481539021, 8658919571, 166768522101, 3421884596011, 74443313899901, 1710104876681571, 41338914172638024, 1048412294411955500, 27821558652073330000, 770663280948805100000, 2.2235353608667473e+22 ]
[ "nonn" ]
A005726
[ 1, 2, 6, 20, 65, 216, 728, 2472, 8451, 29050, 100298, 347568, 1208220, 4211312, 14712960, 51507280, 180642391, 634551606, 2232223626, 7862669700, 27727507521, 97884558992, 345891702456, 1223358393120, 4330360551700 ]
[ "nonn", "easy" ]
A131543
[ 0, 12, 33, 50, 421, 422, 2187, 15554, 42483, 42485, 42486, 1522085, 2662514, 6855863, 6855865 ]
[ "more", "nonn", "base" ]
A320901
[ 1, -3, 11, -23, 36, -49, 85, -143, 176, -188, 287, -433, 456, -479, 726, -959, 970, -1024, 1331, -1748, 1866, -1741, 2301, -3153, 2961, -2824, 3830, -4559, 4496, -4514, 5457, -6943, 6842, -6174, 7890, -9844, 9140, -8553, 11126, -13348, ...
[ "sign" ]
A276078
[ 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 17, 18, 19, 21, 22, 23, 25, 26, 29, 30, 31, 33, 34, 35, 37, 38, 39, 41, 42, 43, 45, 46, 47, 49, 50, 51, 53, 55, 57, 58, 59, 61, 62, 63, 65, 66, 67, 69, 70, 71, 73, 74, ...
[ "nonn" ]
A323767
[ 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 3, 3, 1, 1, 2, 5, 5, 3, 1, 1, 2, 9, 11, 8, 4, 1, 1, 2, 17, 29, 26, 13, 4, 1, 1, 2, 33, 83, 92, 63, 21, 5, 1, 1, 2, 65, 245, 338, 343, 153, 34, 5, 1, 1, 2, 129, ...
[ "nonn", "tabl" ]
A344029
[ 72, 2025, 78447, 5922181, 84238825, 1141011175 ]
[ "nonn", "more" ]
A090992
[ 7, 13, 24, 45, 84, 158, 296, 557, 1045, 1966, 3691, 6942, 13038, 24516, 46055, 86585, 162680, 305809, 574624, 1080106, 2029680, 3814941, 7169145, 13474502, 25322375, 47592650, 89441626, 168100324, 315917527, 593742597, 1115852904, 2097145317 ]
[ "nonn", "easy" ]
A126018
[ 2, 3, 43, 5, 683, 7, 10101010101011, 43691, 174763, 11, 2796203, 13, 1.0745322911894562e+42, 1.0518179715343123e+61, 715827883, 17, 4.7765234780450755e+58 ]
[ "nonn" ]
A298109
[ 3, 4, 6, 7, 9, 10, 11, 13, 14, 15, 16, 18, 20, 21, 23, 24, 25, 26, 28, 30, 31, 33, 34, 36, 37, 38, 39, 41, 42, 43, 45, 47, 48, 49, 50, 52, 54, 55, 57, 58, 60, 61, 62, 63, 65, 66, 67, 69, 71, 72, 73, 74, 76, 78,...
[ "nonn", "easy" ]
A125391
[ 1, 28, 278, 2218, 20698, 196378, 1908368, 18800964, 187240242, 1880087458, 19001528288, 193056703076, 1969968657844, 20174161922072, 207225426515028, 2134025764850968, 22024156859681680, 227721370771551780 ]
[ "nonn", "base" ]
A320273
[ 0, 1, 3, 2, 9, 4, 6, 10, 27, 5, 12, 7, 11, 28, 18, 13, 30, 8, 81, 15, 29, 19, 36, 14, 31, 21, 82, 16, 33, 20, 84, 37, 54, 32, 22, 83, 39, 17, 90, 34, 24, 85, 243, 38, 55, 45, 23, 87, 40, 57, 91, 35, 108, 25, ...
[ "nonn", "base" ]
A245625
[ 0, 2, 1, 13, 4, 34, 9, 65, 16, 106, 25, 157, 36, 218, 49, 289, 64, 370, 81, 461, 100, 562, 121, 673, 144, 794, 169, 925, 196, 1066, 225, 1217, 256, 1378, 1514, 324, 1693, 361, 1882, 400, 2081, 441, 2290, 484, 2509, 529, 2738...
[ "nonn" ]
A016965
[ 262144, 1000000000, 68719476736, 1207269217792, 10578455953408, 60716992766464, 262144000000000, 922190162669056, 2779905883635712, 7427658739644928, 18014398509481984, 40353607000000000, 84590643846578180, 167619550409708030, 316478381828866050, 572994802228616700 ]
[ "nonn", "easy" ]
A010857
[ 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, ...
[ "nonn", "easy" ]
A015186
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0...
[ "sign" ]
A312745
[ 1, 4, 8, 15, 20, 22, 26, 30, 37, 44, 45, 52, 51, 58, 65, 70, 74, 78, 80, 87, 94, 92, 104, 100, 111, 117, 119, 122, 126, 130, 141, 148, 140, 154, 146, 162, 169, 170, 173, 176, 179, 191, 198, 188, 208, 196, 214, 219, 218, ...
[ "nonn" ]
A386304
[ 1, 16, 27, 75, 128, 343, 475, 600, 663, 715, 759, 1015, 1845, 2679, 3717, 3933, 4440, 5083, 5325, 5467, 6120, 6210, 6325, 6405, 6859, 7029, 8349, 8541, 8664, 9125, 9960, 12045, 12427, 12535, 13509, 15067, 16677, 18693, 18711, 21783, 227...
[ "nonn" ]
A149794
[ 1, 1, 5, 19, 85, 343, 1603, 6963, 33103, 149467, 717119, 3310881, 15990331, 74956235, 363784547, 1724083341, 8397896787, 40123660477, 195991475917, 942221083739, 4612881371411, 22284361531757, 109301035545679, 530088616172357, 2604008059060621, 12669278896916644, ...
[ "nonn", "walk" ]
A290860
[ 1, 11, 1, 1111, 11, 111111, 11, 11111111, 1111, 1111111111, 1111, 111111111111, 1111, 11111111111111, 1111, 1111111111111111, 11111111, 111111111111111100, 11111111, 11111111111111110000, 11111111, 1.1111111111111111e+21, 11111111, 1.1111111111111111e+23 ]
[ "nonn", "easy" ]
A336916
[ 0, 0, 2, 0, 3, 1, 3, 0, 2, 2, 4, 1, 4, 2, 2, 0, 5, 1, 5, 1, 2, 3, 5, 1, 3, 3, 2, 1, 5, 1, 5, 0, 2, 4, 2, 1, 6, 4, 2, 1, 6, 1, 6, 2, 2, 4, 6, 1, 3, 2, 2, 2, 6, 1, 3, 1, 2, 4, 6, 1, 6, 4, 2, 0...
[ "nonn" ]
A295832
[ 1, 1, 1, 3, 5, 8, 12, 20, 33, 50, 74, 114, 175, 257, 375, 555, 814, 1171, 1677, 2406, 3435, 4855, 6825, 9591, 13428, 18667, 25851, 35745, 49250, 67544, 92340, 125966, 171345, 232257, 313945, 423470, 569778, 764465, 1023231, 1366827, 182...
[ "nonn" ]
A189595
[ 1, 1, 1, 4, 13, 35, 89, 192, 418, 971, 2336, 5654, 13472, 31741, 74468, 175022, 413210, 977502, 2311729, 5460828, 12889416, 30420888, 71817384, 169592184, 400517287, 945825180, 2233383719, 5273484497, 12451877435, 29402388773, 69428451013 ]
[ "nonn" ]
A160473
[ 3, 30, 315, 11340, 311850, 12162150, 638512875, 86837751000, 7424627710500, 779585909602500, 98617617564716260, 14792642634707438000, 2.596108782391155e+21, 5.270100828254045e+23, 1.2252984425690655e+26, 6.4695757767646655e+28 ]
[ "easy", "nonn" ]
A031664
[ 119797, 176521, 250169, 327409, 420193, 422789, 425393, 426698, 530345, 533261, 643645, 653305, 766154, 774929, 780218, 783754, 905026, 906929, 910741, 914561, 918389, 920306, 926069, 1061629, 1219657, 1224077, 1232941, 1241837 ]
[ "nonn" ]
A304070
[ 0, 2, 8, 40, 240, 1992, 24416, 483040, 16343872, 982635280, 106979975168, 21285548190080, 7783083940331520, 5254164116114948000, 6.577258363669089e+21, 1.5332656940815955e+25, 6.6830735142688175e+28, 5.4672201561519506e+32 ]
[ "nonn" ]
A027545
[ 1135, 60335, 1343716, 18687638, 193668105, 1648053597, 12219297310, 82056694700, 512502614251, 3033393752507, 17245138286520, 95094751802370, 512243600315149, 2709201260006969, 14119713363096754, 72700387863373020, 370461489754356030, 1870587217868421000 ]
[ "nonn" ]
A213059
[ 1, 12, 2, 123, 13, 23, 3, 1234, 124, 134, 234, 14, 24, 34, 4, 12345, 1235, 1245, 1345, 2345, 125, 135, 145, 235, 245, 345, 15, 25, 35, 45, 5, 123456, 12346, 12356, 12456, 13456, 23456, 1236, 1246, 1256, 1346, 1356, 1456, 2346, 2...
[ "nonn" ]
A000843
[ 0, 0, 0, 1, 1, 4, 12, 66, 433, 3442, 30404, 294951, 3093770, 34846185, 419020738, 5355289843, 72466668921, 1034818990771, 15548633703424, 245182764121059, 4047990858838185, 69826392559499100, 1256005988628521500, 23517396850332615000, 457623646061902600000 ]
[ "nonn" ]
A244313
[ 38, 58, 66, 87, 110, 205, 210, 310, 410, 510, 610, 710, 714, 810, 910, 1010, 2010, 3010, 4010, 5010, 6010, 7010, 8010, 9010, 10010, 20010, 30010, 40010, 50010, 60010, 70010, 80010, 90010, 100010, 200010, 300010, 400010, 500010, 600010, 70...
[ "nonn", "base" ]
A070792
[ 7, 14, 19, 23, 28, 29, 32, 37, 38, 41, 46, 47, 49, 50, 55, 56, 58, 64, 65, 67, 73, 74, 76, 82, 83, 85, 89, 91, 92, 94, 98, 110, 121, 136, 143, 187, 220, 235, 242, 286, 334, 341, 385, 433, 440, 484, 532, 569, 583, 631, ...
[ "base", "nonn" ]
A315249
[ 1, 6, 10, 15, 19, 27, 32, 37, 39, 46, 53, 59, 61, 66, 70, 80, 84, 88, 91, 97, 105, 110, 113, 117, 122, 133, 135, 139, 142, 150, 158, 162, 162, 169, 173, 187, 186, 191, 191, 202, 211, 215, 213, 220, 224, 240, 238, 242, 24...
[ "nonn" ]
A259531
[ 1, 1, 14, 11, 6, 31, 2, 34, 2, 76, 1, 100, 71, 38, 1, 7, 62, 1128, 1, 180, 123, 15, 174, 128, 4, 111, 110, 2, 4, 2, 2241, 21, 144, 416, 397, 31, 11, 8, 15, 5, 91, 56, 53, 23, 89, 18, 25, 341, 12, 1, 66, 454, 159,...
[ "nonn" ]
A379412
[ 2, 5, 8, 12, 14, 17, 20, 24, 27, 29, 33, 36, 39, 41, 45, 48, 51, 55, 57, 60, 63, 67, 69, 72, 76, 79, 82, 84, 88, 91, 94, 97, 100, 103, 106, 110, 112, 115, 119, 122, 124, 127, 131, 134, 137, 140, 143, 146, 149, 152, 1...
[ "nonn" ]
A220478
[ 0, 2, 4, 6, 10, 12, 16, 20, 24, 30, 34, 40, 48, 50, 54, 58, 64, 74, 80, 94, 102, 112, 126, 134, 146, 160, 164, 172, 180, 190, 206, 218, 240, 256, 272, 290, 302, 316, 332, 348, 364, 374, 386, 406, 420, 442, 464, 482, 500,...
[ "nonn" ]
A118351
[ 1, 1, 6, 42, 325, 2688, 23286, 208659, 1918314, 17994264, 171542460, 1657212768, 16188521454, 159634359415, 1586932321578, 15886925400954, 160026976985205, 1620715748715648, 16493797802077032, 168583560794745700 ]
[ "nonn" ]
A039008
[ 1, 3, 4, 6, 8, 9, 10, 16, 18, 19, 21, 23, 24, 27, 31, 33, 34, 35, 41, 43, 44, 46, 48, 49, 51, 53, 54, 55, 65, 70, 77, 81, 83, 84, 85, 91, 93, 94, 96, 98, 99, 102, 106, 108, 109, 110, 116, 118, 119, 121, 123, 124, ...
[ "nonn", "base", "easy" ]
A165550
[ 0, 1, 2, 3, 10, 20, 30, 33, 100, 200, 300, 330, 333, 1000, 1143, 1431, 2000, 2242, 3000, 3233, 3300, 3330, 3331, 3333, 3411, 3433, 4131, 10000, 11234, 11243, 11344, 11403, 11430, 11432, 11433, 12235, 12523, 13134, 13142, 13144, 13241, ...
[ "base", "easy", "nonn" ]
A273984
[ 1, 0, 7, 1, 2, 8, 5, 0, 5, 5, 4, 2, 1, 8, 0, 7, 6, 5, 8, 5, 1, 8, 7, 1, 1, 9, 7, 8, 0, 3, 0, 8, 1, 7, 1, 6, 0, 7, 6, 3, 1, 7, 9, 7, 7, 7, 1, 6, 7, 0, 5, 6, 2, 1, 7, 0, 2, 4, 6, 9, 3, 6, 5, 9...
[ "nonn", "cons" ]
A062268
[ 0, 6, 30, 37, 53, 83, 133, 212, 230, 249, 377, 451, 477, 649, 745, 813, 920, 957, 995, 1073, 1113, 1154, 1369, 1507, 2125, 2296, 2414, 2596, 2658, 2721, 2849, 2914, 2980, 3114, 3182, 3679, 3753, 3903, 3979, 4056, 4212, 4291, 4371, ...
[ "easy", "nonn" ]
A300441
[ 1, 1, 2, 1, 3, 2, 1, 1, 4, 3, 3, 2, 3, 1, 3, 1, 3, 4, 4, 3, 5, 3, 3, 2, 4, 3, 3, 1, 5, 3, 3, 1, 6, 3, 4, 4, 5, 4, 4, 3, 6, 5, 4, 3, 5, 3, 4, 2, 5, 4, 5, 3, 4, 3, 5, 1, 5, 5, 3, 3, 3, 3, 5, 1...
[ "nonn" ]
A037191
[ 1, 0, 756, 17472, 700812, 13487040, 143699220, 1061439552, 6038839548, 27868766016, 109814205816, 378998996544, 1173180111852, 3325312497024, 8715279904416, 21337957069632, 49450420013148, 108741984430464, 228329201738484, 461698406495424, 899506102392072 ]
[ "nonn" ]
A387960
[ 1, 2, 2, 1, 2, 4, 2, 1, 1, 4, 2, 2, 2, 4, 4, 2, 2, 2, 2, 2, 4, 4, 2, 2, 1, 4, 1, 2, 2, 8, 2, 1, 4, 4, 4, 1, 2, 4, 4, 2, 2, 8, 2, 2, 2, 4, 2, 4, 1, 2, 4, 2, 2, 2, 4, 2, 4, 4, 2, 4, 2, 4, 2, 1...
[ "nonn", "easy", "mult" ]
A348576
[ 0, 1, 0, 1, 3, 0, 1, 10, 12, 0, 1, 25, 80, 60, 0, 1, 56, 360, 660, 360, 0, 1, 119, 1372, 4620, 5880, 2520, 0, 1, 246, 4788, 26376, 58800, 57120, 20160, 0, 1, 501, 15864, 134316, 466704, 771120, 604800, 181440, 0, 1, 1012, ...
[ "nonn", "tabl" ]
A083225
[ 1, 6, 64, 384, 4096, 24576, 262144, 1572864, 16777216, 100663296, 1073741824, 6442450944, 68719476736, 412316860416, 4398046511104, 26388279066624, 281474976710656, 1688849860263936, 18014398509481984, 108086391056891900 ]
[ "easy", "nonn" ]
A322055
[ 1, 9, 41, 73, 145, 185, 321, 385, 577, 649, 881, 993, 1297, 1401, 1729, 1889, 2305, 2441, 2865, 3073, 3601, 3769, 4289, 4545, 5185, 5385, 6001, 6305, 7057, 7289, 8001, 8353, 9217, 9481, 10289, 10689, 11665, 11961, 12865, 13313, 14401, ...
[ "nonn" ]
A244126
[ 0, 0, 1, 0, 0, 3, 0, 0, -3, 16, 0, 0, 3, -32, 125, 0, 0, -3, 64, -375, 1296, 0, 0, 3, -128, 1125, -5184, 16807, 0, 0, -3, 256, -3375, 20736, -84035, 262144, 0, 0, 3, -512, 10125, -82944, 420175, -1572864, 4782969, 0, 0, -3...
[ "sign", "tabl" ]
A333581
[ 1, 16, 378, 10204, 286395, 8142184, 232408228, 6641558434, 189856823709, 5427696641303, 155171211771501, 4436158800822989, 126824318787312700, 3625748174071085600, 103655548766966800000, 2.9633803357252815e+21, 8.471926955223027e+22, 2.4220159493711695e+24 ]
[ "nonn" ]
A262910
[ 1, 2, 10, 59, 366, 2337, 15205, 100235, 667222, 4474733, 30188335, 204646532, 1392850785, 9511878729, 65144238981, 447263887479, 3077459618886, 21215286546705, 146500755609415, 1013180180867125, 7016536189029551, 48650933146617730, 337709155342663600 ]
[ "nonn" ]
A104202
[ 2, 2, 4, 4, 4, 2, 4, 4, 4, 2, 4, 4, 4, 6, 6, 6, 6, 6, 2, 6, 6, 6, 6, 6, 4, 4, 4, 2, 4, 4, 4, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 6, 6, 6, 6, 6, 4, 4, 4, 2, 6, 6, 6, 6, 6, 4, 4, 4, 6, 6, 6, 6, 6...
[ "easy", "nonn" ]
A237264
[ 0, 2, 4, 4, 8, 7, 13, 15, 22, 21, 28, 29, 36, 35, 44, 45, 54, 55, 67, 70, 83, 84, 96, 99, 116, 119, 135, 138, 154, 154, 170, 172, 187, 189, 208, 211, 231, 235, 259, 264, 285, 286, 306, 310, 334, 337, 361, 366, 389, 390...
[ "nonn", "easy" ]
A087893
[ 0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 2, 0, 2, 2, 0, 0, 2, 0, 2, 2, 2, 0, 2, 0, 2, 0, 2, 0, 6, 0, 0, 2, 2, 2, 2, 0, 2, 2, 2, 0, 6, 0, 2, 2, 2, 0, 2, 0, 2, 2, 2, 0, 2, 2, 2, 2, 2, 0, 6, 0, 2, 2, 0...
[ "nonn" ]
A117312
[ 0, 1, 10, 378, 666, 990, 1485, 1953, 2556, 2628, 4095, 4851, 4950, 6903, 9045, 9180, 10296, 11628, 11781, 14535, 14706, 16290, 19503, 19701, 21528, 23436, 25425, 27261, 29403, 31626, 33930, 34191, 36315, 39060, 41328, 41616, 44253, 52326 ]
[ "base", "nonn" ]
A056473
[ 0, 0, 0, 0, 0, 0, 1, 1, 10, 10, 65, 65, 350, 350, 1701, 1701, 7770, 7770, 34105, 34105, 145750, 145750, 611501, 611501, 2532530, 2532530, 10391745, 10391745, 42355950, 42355950, 171798901 ]
[ "nonn", "easy" ]
A022576
[ 1, 11, 66, 297, 1122, 3740, 11341, 31922, 84535, 212707, 512369, 1188353, 2666048, 5807296, 12319659, 25518757, 51725289, 102786959, 200568907, 384847199, 727019260, 1353654049, 2486522369, 4509972819, 8083287432, 14326409152, 25124415635, 43622744968, 7502666...
[ "nonn" ]
A232959
[ 256, 7203, 400329, 20442651, 1074244299, 56282275743, 2953363127697, 154964050219677, 8131839344628711, 426724728385684700, 22392882542866506000, 1.1750937286480873e+21, 6.166450706551764e+22 ]
[ "nonn" ]
A240400
[ 0, 1, 5, 6, 19, 20, 24, 25, 65, 66, 70, 71, 84, 85, 89, 90, 211, 212, 216, 217, 230, 231, 235, 236, 276, 277, 281, 282, 295, 296, 300, 301, 665, 666, 670, 671, 684, 685, 689, 690, 730, 731, 735, 736, 749, 750, 754, 755, ...
[ "nonn" ]
A228716
[ 1, 0, 1, 2, 0, 0, 1, 0, 1, 3, 0, 0, 0, 1, 0, 0, 1, 0, 1, 2, 2, 4, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 3, 2, 5, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1...
[ "nonn", "tabf" ]
A322278
[ 1, 0, 1, 0, 3, 4, 0, 19, 84, 38, 0, 195, 2470, 3140, 728, 0, 3031, 108390, 307390, 186360, 26704, 0, 67263, 7192444, 42747460, 52630060, 18926544, 1866256, 0, 2086099, 726782784, 9030799218, 20784069600, 14401134944, 3463311488, 251548592 ]
[ "nonn", "tabl" ]
A148432
[ 1, 1, 2, 5, 19, 61, 231, 829, 3411, 13174, 55582, 224050, 967760, 4025392, 17659214, 75079047, 333251508, 1441084386, 6455852339, 28282925801, 127631409983, 565049348637, 2565238396179, 11453873093860, 52258674096405, 234993625412768, 1076697344305840, 487048679...
[ "nonn", "walk" ]
A315549
[ 1, 6, 11, 17, 23, 29, 35, 41, 47, 53, 59, 64, 70, 76, 81, 87, 93, 99, 105, 111, 117, 123, 129, 134, 140, 146, 151, 157, 163, 169, 175, 181, 187, 193, 199, 204, 210, 216, 221, 227, 233, 239, 245, 251, 257, 263, 269, 274, ...
[ "nonn" ]
A080954
[ 1, 6, 37, 236, 1569, 10970, 81445, 648240, 5576545, 52142030, 531185925, 5891873300, 70946620225, 923526766050, 12935478240325, 194062691183000, 3105155646818625, 52788408935369750, 950195175533921200 ]
[ "easy", "nonn" ]
A155228
[ 1, 13, 37, 106, 1005, 10898, 103861, 1556609, 33473058, 935408536, 32508382331, 1526329950979, 97248083092281, 8153227821911786 ]
[ "nonn" ]
A033559
[ 1, 2, 1, 3, 2, 2, 2, 3, 1, 3, 2, 2, 2, 3, 1, 3, 2, 2, 2, 5, 3, 3, 3, 3, 3, 4, 1, 4, 3, 3, 3, 3, 3, 5, 2, 2, 2, 3, 1, 3, 2, 2, 2, 5, 3, 3, 3, 3, 3, 6, 3, 3, 3, 3, 3, 4, 1, 4, 3, 3, 3, 3, 3, 5...
[ "nonn" ]
A184358
[ 1, 2, 9, 72, 900, 16200, 396900, 12700800, 514382400, 25719120000, 1556006760000, 112032486720000, 9466745127840000, 927741022528320000, 104370865034436000000, 1.3359470724407808e+22, 1.9304435196769283e+24, 3.127318501876624e+26 ]
[ "nonn" ]
A079192
[ 0, 0, 6, 18904, 4293916368, 298023193359222000, 1.03144247984686e+28, 2.5692357752105887e+41, 6.277101735386681e+57 ]
[ "nonn" ]
A211714
[ 265, 747, 1781, 4001, 8773, 18947, 40653, 87497, 187925, 408201, 886709, 1954227, 4312823, 9660215, 21682565, 49330249, 112485053, 259451281, 599683373, 1398909233, 3268979199, 7693687203, 18131925659, 42963258607, 101902441855 ]
[ "nonn" ]
A214946
[ 0, 60, 1848, 15960, 80040, 292740, 868560, 2218608, 5062320, 10575180, 20577480, 37769160, 66015768, 110690580, 179077920, 280842720, 428571360, 638388828, 930657240, 1330760760, 1869981960, 2586474660, 3526338288, 4744798800 ]
[ "nonn" ]
A051903
[ 0, 1, 1, 2, 1, 1, 1, 3, 2, 1, 1, 2, 1, 1, 1, 4, 1, 2, 1, 2, 1, 1, 1, 3, 2, 1, 3, 2, 1, 1, 1, 5, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 2, 2, 1, 1, 4, 2, 2, 1, 2, 1, 3, 1, 3, 1, 1, 1, 2, 1, 1, 2, 6...
[ "nonn", "easy" ]
A277006
[ 1, 2, 3, 5, 6, 7, 10, 15, 11, 14, 21, 35, 30, 13, 22, 33, 55, 42, 77, 70, 105, 17, 26, 39, 65, 66, 91, 110, 165, 143, 154, 231, 385, 210, 19, 34, 51, 85, 78, 119, 130, 195, 187, 182, 273, 455, 330, 221, 286, 429, 715...
[ "nonn" ]
A254093
[ 3436, 37961, 437412, 5131608, 60404379, 708989540, 8324567231, 97709705091, 1147050936946, 13465223788702, 158070944683856, 1855595195609302, 21782931509612040, 255710529131800540, 3001796532233949700 ]
[ "nonn" ]
A370382
[ 1, 1, 2, 1, 5, 7, 1, 13, 27, 34, 1, 33, 108, 176, 210, 1, 81, 437, 944, 1364, 1574, 1, 193, 1758, 5154, 9144, 12292, 13866, 1, 449, 6959, 28304, 62496, 98742, 126474, 140340, 1, 1025, 26988, 155034, 431644, 808564, 1183264, 146394...
[ "nonn", "tabl" ]
A363559
[ 1, 10, 81, 757, 6561, 59454, 531496, 4788072, 43046721, 387480753, 3486784492, 31381709148, 282429556893, 2541872737062, 22876792457796, 205891204134565, 1853020188851841, 16677182431460826, 150094635300957600, 1350851725033981400, 12157665459056935000 ]
[ "nonn" ]
A080458
[ 4, 8, 12, 12, 16, 20, 24, 24, 28, 32, 36, 36, 40, 44, 48, 48, 52, 56, 60, 60, 64, 68, 72, 72, 76, 80, 84, 84, 88, 92, 96, 96, 100, 104, 108, 108, 112, 116, 120, 120, 124, 128, 132, 132, 136, 140, 144, 144, 148, 152, ...
[ "nonn", "easy" ]
A173279
[ 1, 1, 2, 1, 6, 1, 24, 2, 1, 120, 6, 1, 720, 24, 2, 1, 5040, 120, 6, 1, 40320, 720, 24, 2, 1, 362880, 5040, 120, 6, 1, 3628800, 40320, 720, 24, 2, 1, 39916800, 362880, 5040, 120, 6, 1, 479001600, 3628800, 40320, 720, 24, 2,...
[ "nonn", "tabf" ]