id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A358436
[ 1, 2, 8, 45, 322, 2730, 26004, 268554, 2940080, 33635316, 398300344, 4849845000, 60429982144, 767721774800, 9916427702880, 129937069996965, 1724052965464890, 23129299114182030, 313351935000465900, 4282621342230700000, 58994556159403570000, 818487022124443900000 ]
[ "nonn" ]
A268460
[ 22, 456, 3146, 13204, 41526, 108032, 245626, 504876, 959414, 1712056, 2901642, 4710596, 7373206, 11184624, 16510586, 23797852, 33585366, 46516136, 63349834, 84976116, 112428662, 146899936, 189756666, 242556044, 307062646, 385266072 ]
[ "nonn" ]
A332621
[ 1, 3, 19, 133, 2501, 15631, 705895, 8389641, 258280489, 4000040011, 259374246011, 2972033984173, 279577021469773, 4762288684702095, 233543408203327940, 9223372037928526000, 778579070010669900000, 1.3115469358498304e+22, 1.8742923053624024e+24 ]
[ "nonn" ]
A129874
[ 2, 1, 4, 4, 16, 19, 76, 98 ]
[ "nonn", "more" ]
A179382
[ 1, 1, 2, 1, 3, 5, 6, 1, 4, 9, 2, 4, 10, 9, 14, 1, 5, 5, 18, 4, 10, 7, 5, 9, 10, 2, 26, 8, 9, 29, 30, 1, 6, 33, 11, 14, 3, 9, 15, 17, 27, 41, 2, 11, 4, 4, 3, 14, 24, 15, 50, 23, 4, 53, 18, 14, 14, 19, ...
[ "nonn" ]
A353689
[ 1, 5, 18, 53, 139, 333, 748, 1592, 3246, 6379, 12152, 22524, 40764, 72213, 125505, 214378, 360473, 597450, 977196, 1578852, 2522157, 3986658, 6239619, 9675801, 14874445, 22679693, 34314378, 51539173, 76875314, 113913453, 167741728, 245534597, 357361857...
[ "nonn" ]
A289284
[ 1, 5, 11, 51, 52, 4, 2, 41, 53, 3, 31, 54, 21, 55, 12, 42, 43, 32, 44, 22, 45, 13, 33, 34, 23, 35, 14, 24, 25, 15, 16 ]
[ "nonn", "base", "fini", "full" ]
A041553
[ 1, 6, 7, 34, 41, 280, 9561, 57646, 67207, 326474, 393681, 2688560, 91804721, 553516886, 645321607, 3134803314, 3780124921, 25815552840, 881508921481, 5314869081726, 6196378003207, 30100381094554, 36296759097761, 247880935681120, 8464248572255841 ]
[ "nonn", "frac", "easy" ]
A348517
[ 15, 19, 21, 22, 23, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, ...
[ "nonn" ]
A269356
[ 1, 2, 3, 4, 5, 6, 7, 8, 17, 10, 11, 12, 13, 14, 15, 16, 19, 18, 29, 20, 25, 22, 9, 24, 23, 26, 27, 28, 31, 30, 21, 32, 73, 34, 53, 36, 37, 38, 39, 40, 41, 42, 43, 44, 107, 46, 47, 48, 33, 50, 51, 52, 59, 54, ...
[ "nonn" ]
A097497
[ 3, 4, 8, 11, 20, 22, 32, 34, 41, 56, 56, 70, 80, 82, 88, 100, 116, 116, 130, 140, 140, 154, 160, 170, 190, 200, 202, 212, 214, 213, 250, 256, 272, 268, 296, 296, 308, 322, 328, 340, 356, 352, 380, 382, 392, 386, 410, 442, ...
[ "frac", "nonn" ]
A056901
[ 6, 15, 20, 45, 42, 35, 72, 153, 110, 63, 156, 77, 210, 99, 88, 561, 342, 143, 420, 117, 130, 195, 600, 209, 702, 255, 812, 165, 930, 187, 1056, 2145, 238, 399, 204, 221, 1482, 483, 304, 273, 1806, 247, 1980, 285, 266, 675, 2...
[ "nonn" ]
A139197
[ 559, 4435199, 691891199, 39520825343999, 13516122267648000, 2.872446304320553e+21, 9.824179993044113e+29, 9.136487393531025e+32 ]
[ "nonn" ]
A360498
[ 0, 0, 4, 12, 256, 3620, 87216, 2444084, 87181220 ]
[ "nonn", "more" ]
A174101
[ 3, 6, 18, 21, 30, 33, 51, 63, 81, 90, 96, 105, 135, 138, 153, 156, 165, 168, 186, 216, 243, 261, 270, 300, 336, 363, 375, 378, 411, 426, 441, 453, 495, 510, 531, 543, 576, 585, 606, 615, 618, 648, 651, 723, 726, 741, 765, ...
[ "nonn" ]
A150262
[ 1, 2, 6, 22, 87, 365, 1570, 6882, 30754, 138898, 634681, 2925118, 13575075, 63414859, 297703187, 1404068748, 6648070472, 31583912383, 150515794310, 719198068067, 3444835940010, 16536039844342, 79531636649367, 383200953238878, 1849332507947469, 8938198626868800, 43...
[ "nonn", "walk" ]
A359358
[ 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 3, 1, 0, 0, 2, 0, 2, 2, 4, 0, 1, 0, 5, 0, 3, 0, 3, 0, 0, 3, 6, 1, 2, 0, 7, 4, 2, 0, 4, 0, 4, 1, 8, 0, 1, 0, 4, 5, 5, 0, 3, 2, 3, 6, 9, 0, 3, 0, 10, 2, ...
[ "nonn" ]
A156857
[ 1, 0, -9, 10, 45, -108, -125, 702, -135, -3320, 4239, 11250, -31931, -18180, 165915, -92762, -651375, 1101168, 1747495, -6710310, -694179, 30182500, -28394829, -101934450, 229069225, 203510232, -1198850625, 364506562, 4767453045 ]
[ "easy", "sign" ]
A036576
[ 2, 1, 2, 3, 2, 3, 4, 5, 3, 5, 6, 7, 5, 6, 7, 8, 6, 7, 9, 10, 7, 9, 10, 11, 8, 10, 11, 13, 10, 11, 13, 14, 11, 13, 14, 15, 12, 14, 15, 17, 13, 15, 17, 18, 14, 16, 18, 19, 15, 17, 19, 21, 17, 19, 20, 22, 18...
[ "nonn" ]
A088984
[ 2, 3, 40, 105, 1584, 5985, 107136, 530145, 11116800, 68139225, 1644364800, 12034447425, 329001523200, 2801155982625, 85619242598400, 831764543234625, 28117244819865600, 307025061241523650, 11374945402060800000 ]
[ "nonn" ]
A274414
[ 1, 1, 2, 0, 2, 4, 8, 3, 9, 7, 0, 3, 9, 2, 4, 2, 0, 8, 2, 2, 7, 2, 5, 1, 6, 5, 4, 8, 2, 2, 4, 2, 0, 9, 5, 2, 6, 2, 7, 5, 7, 7, 6, 6, 7, 1, 9, 7, 9, 0, 6, 8, 8, 9, 7, 3, 9, 2, 2, 4, 5, 8, 6, 6...
[ "nonn", "cons" ]
A124972
[ 1, -8, 20, 0, -62, 0, 216, 0, -641, 0, 1636, 0, -3778, 0, 8248, 0, -17277, 0, 34664, 0, -66878, 0, 125312, 0, -229252, 0, 409676, 0, -716420, 0, 1230328, 0, -2079227, 0, 3460416, 0, -5677816, 0, 9198424, 0, -14729608, 0, 23328520, ...
[ "sign" ]
A137902
[ 1, 1, 4, 4, 5, 6, 8, 4, 9, 5, 11, 3, 13, 14, 4, 16, 17, 9, 20, 20, 21, 11, 23, 24, 25, 13, 28, 14, 29, 30, 31, 16, 34, 17, 35, 36, 37, 38, 20, 20, 41, 22, 43, 44, 45, 23, 47, 12, 49, 25, 52, 52, 53, 54, 56, ...
[ "easy", "nonn" ]
A368382
[ 1, 3, 6, 11, 4, 13, 2, 15, 30, 47, 9, 51, 5, 55, 28, 57, 26, 59, 24, 61, 22, 63, 20, 65, 18, 67, 16, 69, 14, 71, 12, 73, 10, 75, 8, 77, 148, 221, 146, 223, 144, 225, 142, 227, 53, 231, 49, 235, 45, 239, 41, 243, ...
[ "nonn" ]
A324903
[ 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0...
[ "nonn" ]
A317112
[ 1, 8, 142, 5157, 392393, 67247490, 25956605294, 22069906835089, 42518510891269920 ]
[ "nonn" ]
A227955
[ 1, 2, 6, 4, 30, 12, 8, 210, 60, 36, 24, 16, 2310, 420, 180, 120, 72, 48, 32, 30030, 4620, 1260, 900, 840, 360, 216, 240, 144, 96, 64, 510510, 60060, 13860, 6300, 9240, 2520, 1800, 1080, 1680, 720, 432, 480, 288, 192, 128, 9699...
[ "nonn", "tabf", "changed" ]
A365212
[ 1, 3, 3, 7, 5, 7, 15, 25, 25, 15, 31, 41, 11, 41, 31, 63, 22, 77, 77, 22, 63, 127, 183, 109, 93, 109, 183, 127, 255, 311, 31, 403, 403, 31, 311, 255, 511, 105, 226, 779, 467, 779, 226, 105, 511, 1023, 1269, 1853, 2253, ...
[ "nonn", "frac", "tabl" ]
A248349
[ 4, 11, 17, 23, 26, 79, 82, 221, 526, 821, 1204, 5392, 13139, 35879, 60991, 77669 ]
[ "nonn", "more", "hard" ]
A290470
[ 3, 7, 15, 59, 143, 367, 1039, 2755, 7395, 20007, 53727, 144635, 389535, 1048159, 2821535, 7595267, 20443523, 55029319, 148125295, 398712379, 1073232175, 2888862159, 7776059055, 20931132355, 56341155043, 151655701607, 408217663167, 1098815603707, 2957725352255 ...
[ "nonn" ]
A171540
[ 5, 9, 7, 6, 1, 4, 3, 0, 4, 6, 6, 7, 1, 9, 6, 8, 1, 9, 9, 8, 4, 4, 0, 8, 5, 8, 9, 8, 4, 6, 5, 6, 2, 4, 9, 2, 4, 2, 3, 4, 3, 9, 5, 4, 9, 4, 9, 9, 0, 5, 1, 5, 7, 1, 2, 9, 3, 7, 0, 8, 2, 4, 5, 0...
[ "cons", "easy", "nonn" ]
A372221
[ 1, 1, 1, 1, 1, 2, 3, 6, 9, 12, 16, 21, 41, 66, 106, 156, 219, 364, 558, 930, 1444, 2191, 3515, 5361, 8737, 13661, 21478, 34397, 53528, 86137, 135294, 215432, 345081, 546705, 879212, 1395476, 2239086, 3596427, 5767656, 9312008, 14949738,...
[ "nonn", "easy" ]
A146295
[ 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 22, 24, 25, 28, 30, 32, 34, 36, 40, 44, 46, 48, 50, 52, 54, 60, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 96, 108, 114, 116, 120, 126, 130, 132, 136, 144,...
[ "fini", "nonn" ]
A341020
[ 1, 1, 2, 5, 10, 22, 48, 104, 224, 485, 1050, 2271, 4914, 10633, 23006, 49777, 107700, 233027, 504192, 1090901, 2360344, 5106990, 11049806, 23908060, 51728994, 111924129, 242166136, 523965997, 1133686030, 2452914922, 5307282140, 11483171904, 24845718294...
[ "nonn" ]
A186554
[ 256, 3891, 60074, 927477, 14319230, 221073168, 3413126694, 52694924343, 813551707879, 12560344087053, 193917905964431, 2993879307207532, 46222205533558880, 713620044483130400, 11017509052404906000 ]
[ "nonn" ]
A238546
[ 1, 1, 1, 3, 4, 8, 10, 17, 23, 35, 45, 66, 86, 120, 154, 209, 267, 355, 448, 585, 736, 946, 1178, 1498, 1857, 2335, 2875, 3583, 4389, 5428, 6611, 8118, 9846, 12013, 14498, 17592, 21147, 25525, 30558, 36711, 43791, 52382, 62259, 741...
[ "nonn", "easy" ]
A090145
[ 1, -1, 2, -7, 20, -31, 2, -127, 1640, -511, -49498, -2047, 2706860, -8191, -199344598, -32767, 19391577680, -131071, -2404879413298, -524287, 370371189286100, -2097151, -69348874388943600, -8388607, 15514534163573864000, -33554431, -4.087072509293057e+21 ]
[ "sign" ]
A295340
[ 11, 13, 26, 28, 41, 43, 56, 58, 71, 73, 86, 88, 101, 103, 116, 118, 131, 133, 146, 148, 161, 163, 176, 178, 191, 193, 206, 208, 221, 223, 236, 238, 251, 253, 266, 268, 281, 283, 296, 298, 311, 313, 326, 328, 341, 343, 356, ...
[ "nonn", "easy" ]
A265198
[ 3249, 3969, 4225, 5041, 5691, 6241, 6561, 7225, 7329, 8281, 8649, 8841, 9025, 9801, 10011, 10794, 11025, 11306, 11449, 11881, 12219, 12321, 12769, 12996, 13689, 13699, 13701, 14114, 14161, 14641, 15129, 15625, 15876, 16129, 16186, 16625, 16641,...
[ "nonn" ]
A172331
[ 0, 6, 12, 18, 25, 31, 37, 43, 50, 56, 62, 68, 75, 81, 87, 93, 100, 106, 112, 118, 125, 131, 137, 143, 150, 156, 162, 168, 175, 181, 187, 193, 200, 206, 212, 218, 225, 231, 237, 243, 250, 256, 262, 268, 275, 281, 287, 293, ...
[ "nonn", "easy", "less" ]
A100476
[ 1, 1, 1, 1, 2, 3, 4, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16, 18, 18, 19, 20, 21, 21, 22, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, ...
[ "easy", "nonn" ]
A302633
[ 13, 65, 47, 149, 691, 2262, 8981, 35772, 135125, 522265, 2030558, 7817366, 30184397, 116738915, 450741840, 1740832183, 6725944705, 25979920451, 100351084472, 387650634193, 1497420252119, 5784201010250, 22343397443993, 86308461484188 ]
[ "nonn" ]
A352195
[ -2, -3, -1, 1, 0, -3, -4, 5, 5, 3, 0, 5, 5, 2, 7, 8, 9, 10, 8, 11, 12, 9, 9, 16, 10, 13, 16, 19, 20, 21, 20, 21, 22, 23, 26, 27, 24, 29, 30, 29, 28, 31, 32, 37, 36, 37, 30, 33, 36, 39, 40, 45, 46, 39, 36, 4...
[ "sign" ]
A028723
[ 0, 0, 0, 0, 0, 1, 3, 9, 18, 36, 60, 100, 150, 225, 315, 441, 588, 784, 1008, 1296, 1620, 2025, 2475, 3025, 3630, 4356, 5148, 6084, 7098, 8281, 9555, 11025, 12600, 14400, 16320, 18496, 20808, 23409, 26163, 29241, 32490, 36100, 39900,...
[ "nonn", "easy" ]
A133452
[ 3, 5, 7, 10, 1, 3, 10, 12, 1, 3, 10, 12, 1, 5, 7, 12, 3, 5, 7, 10, 1, 5, 7, 10, 1, 5, 7, 12, 3, 5, 7, 10, 3, 5, 7, 10, 1, 5, 7, 10, 1, 5, 7, 12, 3, 5, 7, 10, 3, 5, 7, 10, 1, 3, 10, 12, 1, 3, 10, 12,...
[ "nonn", "uned" ]
A104500
[ 1, 4, 11, 35, 98, 294, 832, 2401, 6774, 19137, 53466, 148994, 412233, 1136383, 3116654, 8515706, 23172455, 62836916, 169801824, 457406173, 1228382159, 3289493887, 8784935160, 23400668297, 62179339101, 164832960183, 435978612329, 1150673925933, 3030701471118 ]
[ "nonn" ]
A311643
[ 1, 4, 8, 12, 18, 28, 26, 32, 36, 42, 44, 54, 56, 60, 64, 72, 72, 78, 88, 88, 96, 90, 108, 104, 114, 114, 126, 126, 124, 142, 134, 150, 146, 162, 152, 160, 174, 168, 180, 180, 194, 188, 190, 206, 204, 212, 214, 224, 222, ...
[ "nonn" ]
A310956
[ 1, 4, 7, 9, 12, 17, 21, 24, 27, 34, 37, 41, 42, 47, 52, 59, 59, 60, 65, 72, 76, 78, 80, 86, 92, 95, 96, 101, 105, 112, 114, 115, 121, 126, 127, 131, 136, 141, 142, 148, 152, 155, 161, 161, 163, 171, 176, 179, 179, 184 ...
[ "nonn" ]
A182366
[ 8, 10, 24, 36, 60, 64, 84, 114, 124, 144, 202, 226, 228 ]
[ "nonn" ]
A382896
[ 438, 483, 627, 645, 654, 663, 762, 861, 915, 1086, 1581, 1626, 1842, 2067, 2265, 2373, 2409, 2679, 2751, 3138, 3246, 3345, 3615, 4173, 4191, 4209, 4974, 5253, 5298, 5397, 5946, 6054, 6315, 6531, 6567, 6585, 6603, 6693, 6702, 6855, 6981,...
[ "nonn", "base" ]
A022173
[ 1, 1, 1, 1, 10, 1, 1, 91, 91, 1, 1, 820, 7462, 820, 1, 1, 7381, 605242, 605242, 7381, 1, 1, 66430, 49031983, 441826660, 49031983, 66430, 1, 1, 597871, 3971657053, 322140667123, 322140667123, 3971657053, 597871, 1 ]
[ "nonn", "tabl" ]
A196502
[ 4, 9, 1, 3, 1, 8, 0, 4, 3, 9, 4, 3, 4, 8, 8, 3, 6, 8, 8, 8, 3, 7, 8, 2, 0, 6, 6, 8, 5, 9, 4, 5, 3, 5, 5, 6, 6, 8, 4, 7, 6, 1, 1, 8, 4, 5, 0, 6, 6, 1, 5, 5, 0, 5, 6, 1, 4, 2, 1, 8, 5, 2, 0, 5...
[ "nonn", "cons" ]
A338217
[ 1, 9, 9, 1, 1, 18, 63, 68, 23, 2, 1, 27, 162, 350, 310, 114, 15, 1, 1, 36, 306, 996, 1446, 984, 303, 42, 2, 1, 45, 495, 2155, 4360, 4360, 2141, 505, 49, 1, 1, 54, 729, 3976, 10325, 13650, 9233, 3124, 468, 20, 1, 63, 10...
[ "nonn", "tabf" ]
A095465
[ 30, 33, 36, 40, 44, 51, 100, 121, 210, 1100, 100100, 1.1111111111111111e+35 ]
[ "nonn", "fini", "full" ]
A059833
[ 4, 2, 5, 2, 6, 0, 3, 7, 6, 4, 6, 9, 0, 8, 0, 4, 3, 4, 9, 5, 7, 3, 7, 5, 4, 4, 9, 4, 3, 8, 0, 6, 1, 3, 9, 9, 5, 2, 0, 8, 2, 7, 0, 4, 0, 0, 4, 8, 6, 2, 1, 6, 9, 3, 1, 0, 8, 5, 0, 5, 5, 6, 0, 3...
[ "easy", "nonn", "base" ]
A329974
[ 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 17, 18, 19, 21, 22, 23, 25, 26, 27, 29, 30, 31, 33, 34, 35, 37, 38, 39, 41, 42, 43, 45, 46, 47, 49, 50, 51, 52, 54, 55, 56, 58, 59, 60, 62, 63, 64, 66, 67, 68, 70, 71, ...
[ "nonn", "easy" ]
A385450
[ 8, 4, 4, 6, 5, 7, 6, 2, 0, 0, 9, 5, 5, 9, 2, 8, 2, 3, 8, 0, 2, 6, 1, 2, 8, 3, 7, 6, 2, 3, 3, 9, 1, 9, 5, 7, 3, 6, 3, 8, 7, 6, 6, 4, 1, 8, 8, 9, 5, 8, 4, 4, 1, 6, 4, 8, 8, 5, 5, 4, 1, 9, 0, 9...
[ "cons", "nonn" ]
A189805
[ 0, 1, 3, 75, 245, 6615, 22869, 1288287, 4601025, 265939245, 969738055, 28510298817, 105468168351, 3138933581875, 11734782467625, 1409850293610375, 5313200518272825, 642897262711011800, 2438232652696561700, 74176455589813170000, 282762879579212640000 ]
[ "nonn", "frac" ]
A244851
[ 1, 7, 314, 1655, 11569, 383374, 3052836, 31843469, 458415111, 164840426684 ]
[ "nonn", "base", "fini", "full" ]
A377915
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 28, 14, 15, 43, 16, 17, 56, 18, 19, 67, 20, 21, 22, 44, 23, 24, 57, 25, 26, 68, 27, 29, 30, 31, 32, 45, 33, 34, 58, 35, 36, 69, 37, 38, 39, 59, 40, 41, 70, 42, 46, 4...
[ "nonn", "base" ]
A327828
[ 0, 0, 1, 3, 18, 100, 705, 5166, 44856, 413316, 4297635, 47906650, 586050828, 7669704978, 108433645502, 1632017808435, 26240224612920, 446861879976600, 8063224431751719, 153335328111105280, 3070484092409318000, 64508501542986640000, 1.4200612873114445e+21 ]
[ "nonn" ]
A203170
[ 0, 1, 17, 642, 29203, 1365539, 64107780, 3011403301, 141469813301, 6646055880582, 312223061019703, 14667837157106760, 689076118833982000, 32371909717271870000, 1.520790680382056e+21, 7.14447900667939e+22 ]
[ "nonn", "easy" ]
A100057
[ 2, 4, 8, 12, 18, 24, 30, 40, 50, 60, 70, 80, 96, 112, 128, 144, 160, 176, 192, 208, 234, 260, 286, 312, 338, 364, 390, 416, 442, 468, 494, 520, 546, 588, 630, 672, 714, 756, 798, 840, 882, 924, 966, 1008, 1050, 1092, 1134, ...
[ "nonn" ]
A369338
[ 0, 0, 2, 3, 9, 11, 20, 24, 34, 46, 54, 64, 77, 101, 107, 129, 135, 175, 170, 217, 221, 271, 252, 325, 303, 386, 372, 454, 405, 546, 464, 594, 569, 676, 611, 803, 665, 851, 803, 968, 819, 1118, 902, 1180, 1096, 1261, 1080, ...
[ "nonn", "easy" ]
A111963
[ 1, -1, 1, -1, -2, 1, 3, -1, -3, 1, 1, 8, 0, -4, 1, -9, -3, 14, 2, -5, 1, 1, -26, -15, 20, 5, -6, 1, 27, 27, -45, -37, 25, 9, -7, 1, -13, 76, 98, -56, -70, 28, 14, -8, 1, -81, -135, 108, 228, -46, -114, 28, 20, ...
[ "easy", "sign", "tabl" ]
A337479
[ 120, 180, 300, 420, 504, 630, 660, 780, 924, 990, 1020, 1050, 1092, 1140, 1170, 1380, 1470, 1650, 1740, 1860, 2220, 2310, 2460, 2580, 2730, 2820, 2856, 3168, 3180, 3192, 3432, 3540, 3570, 3660, 3864, 3990, 4020, 4260, 4284, 4290, 4380, ...
[ "nonn" ]
A358579
[ 2, 6, 7, 9, 20, 22, 23, 26, 27, 29, 35, 41, 66, 76, 78, 79, 84, 86, 87, 90, 91, 93, 97, 102, 103, 106, 107, 109, 115, 117, 130, 136, 138, 139, 141, 146, 153, 163, 169, 193, 196, 197, 201, 226, 241, 262, 263, 296, 300, ...
[ "nonn" ]
A219305
[ 4, 18, 90, 423, 1958, 9233, 43725, 206269, 971794, 4583164, 21622807, 101988408, 481001317, 2268654909, 10700463129, 50469641870, 238042556300, 1122743524739, 5295505220276, 24976631418525, 117804014337453, 555630918690165 ]
[ "nonn" ]
A364787
[ 0, 1, 3, 2, 7, 6, 17, 17, 19, 18, 13, 13, 11, 11, 47, 46, 39, 39, 59, 59, 68, 68, 71, 71, 61, 61, 60, 59, 56, 55, 49, 49, 47, 47, 334, 333, 508, 508, 488, 488, 466, 466, 423, 423, 512, 512, 488, 488, 468, 468, 450, ...
[ "nonn" ]
A135077
[ 1, 1, 3, 18, 209, 4650, 198933, 16482902, 2663887921, 844592892082, 527562202908045, 651188478953301100, 1.5917321493395986e+21, 7.716508793733513e+24, 7.427444641352897e+28 ]
[ "nonn" ]
A022680
[ 1, -20, 150, -400, -875, 7396, -7770, -36600, 56510, 154660, -872, -1314200, -455605, 6284960, 3781830, -9954864, -43558410, -16664680, 165132890, 229738040, 57372644, -1326447180, -2095012310, 1723402120, 7805180205 ]
[ "sign" ]
A303288
[ 1, 14, 688, 56738, 6347176, 881241656, 144796770004, 27351977086556, 5826096152426212, 1380051673281134300, 359720002818554270000, 1.0231779324207098e+23, 3.1540355035889304e+25, 1.0475792506313143e+28, 3.730248479020019e+30, 1.4178111891720272e+33, 5.7299247451546645e+35 ]
[ "nonn" ]
A077828
[ 1, 3, 12, 48, 189, 747, 2952, 11664, 46089, 182115, 719604, 2843424, 11235429, 44395371, 175422672, 693160416, 2738935377, 10822555395, 42763953564, 168976333008, 667688525901, 2638286437419, 10424853888984, 41192486556912, 162766880649945, 643152663287523 ]
[ "nonn", "easy" ]
A095611
[ 110, 132, 156, 215, 302, 420, 1232, 11002, 1101110, 1.1111111111111112e+109 ]
[ "nonn", "fini", "full" ]
A160128
[ 3, 7, 19, 63, 235, 919, 3651, 14575, 58267, 233031, 932083, 3728287, 14913099, 59652343, 238609315, 954437199, 3817748731, 15270994855, 61083979347, 244335917311, 977343669163, 3909374676567, 15637498706179 ]
[ "nonn", "easy" ]
A123601
[ 3, 7, 17, 43, 113, 307, 857, 82499, 787811, 20707, 282593347, 181243, 539633, 1223891771, 6113081563, 14414443, 305218827971, 129402307, 5559917314267073000, 11398895186421720, 79792273271180800, 1117568565324771200, 31389448217, 27368747340097690000 ]
[ "nonn" ]
A264842
[ 1, 3, 36, 54765, 123152388, 374848814886363650, 8.579401866381727e+34, 1.0707204788061541e+71 ]
[ "nonn", "base" ]
A322451
[ 1, 0, 0, 1, 3, 29, 2102, 7011184, 1788775603336, 53304526022885280000, 3.662996633788898e+29, 1.1716383185026228e+42, 3.517726593606525e+57 ]
[ "nonn" ]
A049052
[ 28374, 90181, 157493, 171893, 171894, 180965, 180966, 210133, 298694, 346502, 369061, 376742, 610310, 647381, 647382, 707286, 729542, 769862, 1039493, 1039494, 1071829, 1071830, 1243541, 1302005, 1449605, 1450261, 1450262 ]
[ "nonn" ]
A000646
[ 1, 2, 3, 6, 13, 28, 62, 144, 338, 810, 1970, 4852, 12073, 30334, 76805, 195850, 502461, 1296122, 3359527, 8745744, 22856223, 59944156, 157718380, 416189954, 1101204387, 2920914484, 7765357967, 20688204244, 55225188289, 147688302518 ]
[ "nonn", "easy" ]
A141537
[ 47, 227, 71, 359, 113, 563, 173, 839, 251, 1187, 347, 1607, 461, 2099, 593, 2663, 743, 3299, 911, 4007, 1097, 4787, 1301, 5639, 1523, 6563, 43, 7559, 43, 8627, 2297, 9767, 2591, 10979, 2903, 12263, 53, 13619, 3581, 41, 3947, 16547, ...
[ "nonn" ]
A054228
[ 1, 1, 2, 2, 6, 10, 19, 32, 61, 109, 203, 381, 723, 1371, 2623, 5040, 9711, 18781, 36405, 70710, 137603, 268242, 523655, 1023567, 2002923, 3923596, 7693084, 15097117, 29649512, 58271080, 114596811, 225504427, 443998492, 874651263, 1723852015 ]
[ "nonn" ]
A164996
[ 1, 2, 2, 3, 2, 3, 3, 3, 2, 3, 3, 4, 3, 2, 3, 4, 3, 3, 4, 4, 4, 4, 3, 3, 4, 3, 2, 3, 3, 4, 3, 3, 2, 4, 3, 4, 3, 3, 3, 3, 2, 3, 3, 3, 3, 4, 3, 4, 3, 3, 3, 4, 2, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4...
[ "base", "nonn" ]
A068176
[ 2, 25, 225, 1225, 13225, 133225, 10336225, 1033622500, 103362250000, 10336225000000, 1033622500000000, 103362250000000000, 10336225000000000000, 1.0336225e+21, 1.0336225e+23 ]
[ "base", "nonn" ]
A384369
[ 1, 2, 3, 5, 7, 8, 11, 12, 13, 17, 19, 23, 29, 31, 36, 37, 41, 43, 47, 48, 53, 59, 61, 67, 71, 73, 79, 80, 83, 84, 89, 97, 101, 103, 107, 109, 113, 120, 126, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181,...
[ "nonn" ]
A343363
[ 1, 1, 6, 42, 267, 1743, 11234, 72470, 466251, 2996883, 19234836, 123315828, 789682546, 5051601010, 32282443044, 206104519572, 1314652656453, 8378283675645, 53350205335626, 339445117302366, 2158091256282273, 13710402587540468, 87040883294333380, 552205562345916540 ]
[ "nonn" ]
A135566
[ 2, 7, 5, 17, 71, 23, 37, 137, 79, 241, 3, 173, 67, 31, 347, 433, 127, 47, 571, 1069, 107, 227, 229, 853, 647, 271, 83 ]
[ "base", "nonn" ]
A305239
[ 1, 4, 18, 94, 1134, 12521, 311014, 12726939, 841464188, 99227326734, 19635419823116, 6617813957084794, 3801727775370243600 ]
[ "nonn" ]
A012371
[ 2, 4, -178, -5336, 121082, 24994924, 661822982, -273928948016 ]
[ "dead" ]
A160261
[ 1, 26, -1006, -113620, 2122156, 819611416, 3462564856, -8181491724016, -253487023438960, 103499490028946340, 6528273301571581000, -1.5711263164460163e+21, -1.6163539685327383e+23, 2.750909325296127e+25, 4.2495560121706786e+27 ]
[ "sign", "frac" ]
A316682
[ 0, 3, 14, 769, 101803, 43037698, 53245963290, 194833402798826, 2102329685792200400 ]
[ "nonn" ]
A037618
[ 2, 8, 35, 142, 568, 2275, 9102, 36408, 145635, 582542, 2330168, 9320675, 37282702, 149130808, 596523235, 2386092942, 9544371768, 38177487075, 152709948302, 610839793208, 2443359172835, 9773436691342, 39093746765368 ]
[ "nonn", "base", "easy" ]
A130600
[ 1, 1001, 10001, 10101, 10001001, 10100001, 100000001, 100010001, 100100101, 101000101, 101010101, 100000101001, 100010001001, 100100001001, 100101001001, 101000100001, 101010000001, 1000000000001, 1000001000001 ]
[ "nonn", "base" ]
A232647
[ 2, 2, 7, 7, 186, 2004, 27453, 419803 ]
[ "nonn", "more" ]
A183822
[ 225, 43947, 8538066, 1661285961, 323115202755, 62851591581012, 12225396762980828, 2378005715920214000, 462553489019014400000, 8.997280457812352e+22, 1.7500904466916597e+25 ]
[ "nonn" ]
A070666
[ 0, 1, 21, 41, 11, 16, 1, 1, 16, 4, 35, 4, 21, 16, 21, 11, 35, 35, 41, 11, 4, 41, 41, 4, 11, 41, 35, 35, 11, 21, 16, 21, 4, 35, 4, 16, 1, 1, 16, 11, 41, 21, 1, 0, 1, 21, 41, 11, 16, 1, 1, 16, 4, 35, 4, 21, ...
[ "nonn", "easy" ]
A011620
[ 0, 1, 1, 1, 1, 1, 1, -1, 1, 1, 1, -1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, 1, 1, 1, 1, 1, -1, -1, 1, -1, 1, -1, 1, -1, 1, -1, -1, 1, 1, -1, -1, 1, -1, 1, 1, -1, 1, 1, 1, 1, 1, -1, 1, -1, -1, -1, -1, ...
[ "sign", "mult", "easy", "changed" ]
A154360
[ -180, 70, 320, 570, 820, 1070, 1320, 1570, 1820, 2070, 2320, 2570, 2820, 3070, 3320, 3570, 3820, 4070, 4320, 4570, 4820, 5070, 5320, 5570, 5820, 6070, 6320, 6570, 6820, 7070, 7320, 7570, 7820, 8070, 8320, 8570, 8820, 9070, 9320, 9570, 9...
[ "sign", "easy" ]
A137643
[ 1, 19, 9007199254741, 3.927508636855025e+35, 1.9389268200585835e+70, 7.513148009015777e+117 ]
[ "nonn" ]
A280167
[ 1, -1, 3, -3, 6, -5, 9, -7, 12, -9, 15, -11, 18, -13, 21, -15, 24, -17, 27, -19, 30, -21, 33, -23, 36, -25, 39, -27, 42, -29, 45, -31, 48, -33, 51, -35, 54, -37, 57, -39, 60, -41, 63, -43, 66, -45, 69, -47, 72, -49, ...
[ "sign", "easy" ]