id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A166956
[ 0, -1, 3, 5, 15, 29, 63, 125, 255, 509, 1023, 2045, 4095, 8189, 16383, 32765, 65535, 131069, 262143, 524285, 1048575, 2097149, 4194303, 8388605, 16777215, 33554429, 67108863, 134217725, 268435455, 536870909, 1073741823, 2147483645, 4294967295, 858993...
[ "sign", "easy" ]
A237594
[ 0, 0, 1, 1, 2, 1, 2, 3, 1, 1, 2, 4, 2, 4, 6, 5, 7, 3, 4, 3, 4, 2, 12, 7, 3, 5, 4, 9, 5, 6, 4, 5, 12, 6, 7, 5, 9, 6, 12, 11, 13, 7, 7, 7, 14, 5, 5, 14, 14, 8, 13, 11, 7, 10, 19, 17, 16, 8, 11, 7, 7...
[ "nonn" ]
A061645
[ 4, 6, 10, 14, 26, 34, 38, 62, 122, 178, 214, 254, 1042, 1214, 2558, 4406, 4562, 6434, 8506, 8846, 19378, 19882, 22426, 39874, 43402, 46418, 88994, 172486, 221006, 264098, 432182, 1513678, 1718866, 2515574, 2796538, 5952442, 6042754, 13945186,...
[ "nonn" ]
A295813
[ 1, 3, 48, 3271, 575163, 185377116, 93039467356, 66505075585875, 63970743282062650, 79580632411431630000, 1.2429928496880523e+23, 2.381884396782082e+26, 5.49611050835557e+29, 1.5037007346381624e+33, 4.8147516474169853e+36, 1.7841762828286485e+40, 7.577742191790261e+43 ]
[ "nonn" ]
A158377
[ 0, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 10, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 14, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 5...
[ "nonn" ]
A384666
[ 1, 6, 17, 35, 56, 90, 125, 178, 223, 282, 344, 436, 499, 608, 701, 804, 904, 1062, 1164, 1339, 1450, 1604, 1765, 1988, 2114, 2335, 2525, 2735, 2909, 3194, 3366, 3679, 3887, 4137, 4389, 4661, 4840, 5237, 5536, 5835, 6068, 6507, 6759,...
[ "nonn" ]
A313389
[ 1, 5, 10, 13, 17, 22, 25, 31, 39, 41, 43, 49, 52, 55, 64, 71, 72, 75, 79, 82, 87, 95, 103, 105, 105, 109, 114, 117, 126, 137, 136, 135, 141, 144, 147, 159, 169, 167, 167, 171, 174, 179, 190, 201, 200, 197, 201, 206, 209,...
[ "nonn" ]
A373313
[ 1, 3, 18, 127, 999, 8376, 73400, 664143, 6157467, 58190531, 558478098, 5428532148, 53331912158, 528721992000, 5282688183600, 53140908294191, 537760961917833, 5470638540940401, 55914705172750450, 573908634206898940, 5913010265931479000, 61132102068652970000, 63400285994497...
[ "nonn" ]
A250663
[ 1, 1, 1, 1, 1, 1, 9, 19, 31, 45, 61, 79, 196, 419, 786, 1341, 2134, 3221, 5789, 10995, 20621, 37149, 63931, 105379, 180201, 319826, 578034, 1040971, 1840549, 3171726, 5465324, 9529019, 16830425, 29914626, 53016504, 92934619, 161999425, 282619...
[ "nonn", "easy" ]
A231921
[ 0, 4, 1, 3, 9, 5, 2, 6, 10, 8, 12, 20, 24, 27, 11, 7, 13, 17, 23, 25, 28, 14, 16, 18, 22, 26, 29, 15, 19, 21, 31, 35, 37, 39, 47, 51, 59, 61, 65, 69, 73, 75, 81, 30, 36, 40, 44, 50, 52, 56, 60, 68, 70, 72, 76...
[ "nonn", "base", "easy" ]
A030175
[ 1, 11, 111, 36361, 363639, 461761, 3636361, 34815389, 362397739, 176412364139, 57637950363639, 3497458093147239, 56843832676142730000, 557963558954625900000 ]
[ "nonn", "base", "changed" ]
A240345
[ 32, 1418, 55680, 2044806, 73440130, 2607237326, 92003133794, 3236101836296, 113624636162418, 3985651854889090, 139731093389917980, 4897309578556430000, 171612989550424160000, 6.013159384213632e+21, 2.1068469220408176e+23 ]
[ "nonn" ]
A068215
[ 2, 6, 30, 210, 1890, 20790, 270270, 1.8965167172124152e+36, 1.220462921565156e+54 ]
[ "nonn", "frac" ]
A249370
[ 3, 5, 7, 11, 12, 13, 17, 19, 20, 23, 27, 28, 29, 31, 37, 41, 43, 44, 45, 47, 48, 52, 53, 59, 61, 63, 67, 68, 71, 73, 75, 76, 79, 80, 83, 89, 92, 97, 99, 101, 103, 107, 108, 109, 112, 113, 116, 117, 124, 125, 127, 1...
[ "nonn", "easy" ]
A303028
[ 0, 1, 1, -1, -2, 2, 3, 6, 8, 4, 2, 0, -3, -3, -9, -7, -15, -4, -8, 3, 1, 8, 8, 14, 17, 18, 21, 25, 34, 30, 37, 37, 52, 35, 39, 29, 37, 23, 20, 15, 14, 11, 3, 5, -3, 0, -14, -8, -25, -11, -29, -14, -35, -20, -...
[ "sign", "look", "hear" ]
A297665
[ 3, 10, 17, 26, 37, 54, 83, 132, 211, 336, 535, 856, 1377, 2222, 3589, 5798, 9369, 15146, 24495, 39624, 64103, 103708, 167787, 271468, 439229, 710674, 1149881, 1860530, 3010381, 4870878, 7881227, 12752076, 20633275, 33385320, 54018559, 87403840, ...
[ "nonn", "easy" ]
A094855
[ 1, 3, 10, 35, 124, 440, 1560, 5525, 19551, 69142, 244419, 863788, 3052100, 10782928, 38092457, 134560491, 475313762, 1678930611, 5930320300, 20946860064, 73987208296, 261331829501, 923052962407, 3260318517230, 11515766271219 ]
[ "nonn", "easy" ]
A117229
[ 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0...
[ "base", "easy", "nonn" ]
A003746
[ 540, 1751352, 5386703316, 16582103036544, 51045000577926820, 157132783947988300000, 4.8370480137733536e+23, 1.4889975788252052e+27, 4.583609224965381e+30 ]
[ "nonn" ]
A306725
[ 1, 0, 0, 1, 2, 9, 46, 507, 11800 ]
[ "nonn", "more" ]
A181960
[ 9, 40, 156, 740, 3668, 16948, 77861, 379084, 1889419 ]
[ "nonn", "more" ]
A230176
[ 0, 3, 3, 3, 27, 3, 9, 193, 193, 9, 15, 1407, 3787, 1407, 15, 33, 10211, 78849, 78849, 10211, 33, 63, 73417, 1637019, 4722977, 1637019, 73417, 63, 129, 530771, 33908253, 284444079, 284444079, 33908253, 530771, 129, 255, 3841171, 704822331 ]
[ "nonn", "tabl" ]
A265558
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 11, 22, 33, 44, 55, 66, 77, 88, 99, 22, 22, 22, 33, 44, 55, 66, 77, 88, 99, 33, 33, 33, 33, 44, 55, 66, 77, 88, 99, 44, 44, 44, 44, 44, 55, 66, 77, 88, 99, 55, 55, 55, 55, 55...
[ "nonn", "base" ]
A228821
[ 0, -1, 1, -2, -1, 0, 3, -3, -2, -2, -1, -1, 0, 2, 7, -4, -3, -3, -3, -2, -2, -2, -2, -1, -1, -1, 0, 1, 2, 6, 15, -5, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1, -1, 0, ...
[ "sign", "tabf" ]
A366186
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 25, 26, 28, 29, 30, 31, 32, 35, 36, 37, 38, 42, 50, 52, 55, 56, 57, 58, 60, 61, 62, 66, 70, 71, 72, 78, 80, 92, 110, 121, 122, 156, 176...
[ "nonn", "fini" ]
A120474
[ 1, -1, 1, 0, -1, 0, 1, 0, 0, -1, 1, -1, 0, 0, 1, 0, 0, 0, -1, 1, 0, -1, 1, -1, 0, 1, -1, 0, 0, 0, 1, 0, 0, 0, 0, -1, 1, 0, 0, -1, 1, 0, -1, 1, -1, 0, 1, 0, -1, 1, -1, 0, 1, -1, 0, 0, 1, -1, 0, 0, ...
[ "sign" ]
A166585
[ 1, 17, 272, 4352, 69632, 1114112, 17825792, 285212672, 4563402752, 73014444032, 1168231104512, 18691697672192, 299067162754936, 4785074604076800, 76561193665194110, 1224979098642551000, 19599665578271940000 ]
[ "nonn" ]
A338231
[ 0, 2, 5, 7, 14, 20, 27, 33, 41, 54, 65, 75, 90, 104, 119, 129, 152, 167, 189, 207, 230, 252, 275, 297, 319, 350, 374, 403, 434, 464, 495, 521, 560, 594, 629, 654, 702, 740, 779, 817, 860, 902, 945, 987, 1031, 1080, 1127, 1...
[ "nonn", "easy" ]
A139225
[ 2, 14, 310, 5334, 22361430, 5726491990, 91625444694, 1537228670661645600, 1.7723039943798877e+36, 1.2770796173882406e+53, 8.776024305713098e+63, 9.649340769776349e+75 ]
[ "nonn" ]
A162505
[ 1, 4, 10, 19, 31, 46, 63, 81, 99, 116, 131, 143, 151, 154, 151, 143, 131, 116, 99, 81, 63, 46, 31, 19, 10, 4, 1 ]
[ "nonn", "fini", "full" ]
A124730
[ 1, 1, 2, 1, 6, 2, 1, 14, 8, 4, 1, 30, 22, 24, 4, 1, 62, 52, 92, 28, 8, 1, 126, 114, 288, 120, 72, 8, 1, 254, 240, 804, 408, 384, 80, 16, 1, 510, 494, 2088, 1212, 1584, 46, 192, 16 ]
[ "nonn", "tabl" ]
A360397
[ 2, 4, 13, 22, 34, 40, 49, 58, 64, 76, 85, 94, 106, 112, 124, 133, 142, 148, 157, 166, 178, 184, 193, 202, 208, 220, 229, 238, 244, 253, 262, 274, 280, 292, 301, 310, 322, 328, 337, 346, 352, 364, 373, 382, 394, 400, 412, 4...
[ "nonn", "easy" ]
A024879
[ 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 2, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 2, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0...
[ "nonn" ]
A111126
[ 1, 10, 3, 35, 28, 5, 84, 126, 54, 7, 165, 396, 297, 88, 9, 286, 1001, 1144, 572, 130, 11, 455, 2184, 3510, 2600, 975, 180, 13, 680, 4284, 9180, 9350, 5100, 1530, 238, 15, 969, 7752, 21318, 28424, 20995, 9044, 2261, 304, 17, 13...
[ "nonn", "easy", "tabl" ]
A389377
[ 1, 0, 0, 3, 16, 50, 141, 469, 1744, 6321, 21990, 76395, 270349, 966225, 3450531, 12303893, 43955728, 157509760, 565530783, 2032581050, 7312257366, 26336300266, 94962280677, 342740016067, 1238046386701, 4475525056900, 16190929086319, 58613690463690 ]
[ "nonn" ]
A285380
[ 1, 1, 3, 21, 459, 48069, 31721355, 151932395493, 5929991210130219, 2.1036578355959334e+21, 7.506346835525189e+27, 2.9574349761532086e+35, 1.4018960928688825e+44 ]
[ "nonn" ]
A273774
[ 8, 6, 1, 6, 4, 6, 0, 7, 9, 9 ]
[ "nonn", "cons", "fini", "full" ]
A219660
[ 0, 1, 0, 1, 1, 0, 1, 2, 0, 2, 2, 1, 1, 4, 2, 3, 4, 3, 1, 4, 3, 1, 5, 4, 3, 3, 5, 7, 8, 4, 4, 3, 4, 8, 5, 4, 6, 6, 4, 7, 7, 10, 7, 11, 7, 8, 8, 4, 8, 12, 8, 9, 7, 8, 10, 13, 8, 8, 10, 8, 6, 12, ...
[ "nonn", "base" ]
A150065
[ 1, 2, 6, 18, 64, 210, 762, 2664, 9948, 35550, 134096, 490758, 1871274, 6920776, 26536824, 99336688, 383085288, 1442993348, 5583944754, 21186604016, 82280182330, 313474831586, 1220223616072, 4671414192364, 18228504093426, 69988351835476, 273557616546360, 10539590...
[ "nonn", "walk" ]
A382854
[ 1, 5, 3, 4, 2, 6, 4, 0, 9, 7, 2, 0, 0, 2, 7, 3, 4, 5, 2, 9, 1, 3, 8, 3, 9, 3, 9, 2, 7, 0, 9, 1, 1, 7, 1, 5, 9, 6, 2, 2, 4, 9, 9, 3, 2, 8, 1, 9, 8, 7, 2, 3, 7, 2, 9, 3, 9, 6, 5, 9, 9, 9, 5, 2...
[ "nonn", "cons" ]
A364180
[ 1, 1152, 5542680, 31473008640, 190818980609400, 1198265754978353200, 7.691041400616851e+21, 5.0107639155283425e+25, 3.300148479323767e+29, 2.1914890806005248e+33, 1.464713765330094e+37 ]
[ "nonn", "easy" ]
A323516
[ 6, 16, 2430 ]
[ "nonn", "more", "bref" ]
A205329
[ 72, 594, 4860, 39852, 326592, 2676888, 21939984, 179823888, 1473863040, 12080008224, 99009584064, 811497652416, 6651158427648, 54513908309376, 446804301553920, 3662076158892288, 30014934381324290, 246006977148006900 ]
[ "nonn" ]
A332690
[ 0, 1, 12, 124, 1248, 12496, 124992, 1249984, 12499968, 124999936, 1249999862, 12499999623, 124999998144, 1249999984364, 12499999840480, 124999998308464, 1249999981991936, 12499999808733888, 124999997974967800, 1249999978624935700, 12499999774999871000 ]
[ "nonn", "base", "easy" ]
A159866
[ 1, 2, 5, 17, 55, 206, 781, 3099, 12421, 50725, 208870, 868238, 3631673, 15281827, 64610493, 274346429, 1169219224, 4999544053, 21440702381, 92192889106 ]
[ "nonn", "hard", "more" ]
A160483
[ -11, 36, -85, 166, -287, 456, -681, 970, -1331, 1772, -2301, 2926, -3655, 4496, -5457, 6546, -7771, 9140, -10661, 12342, -14191, 16216, -18425, 20826, -23427, 26236, -29261, 32510, -35991, 39712, -43681, 47906, -52395, 57156 ]
[ "easy", "sign" ]
A316506
[ 0, 1, 1, 2, 2, 2, 1, 3, 2, 3, 1, 3, 2, 2, 3, 3, 2, 2, 1, 4, 2, 2, 1, 4, 2, 3, 2, 3, 2, 4, 1, 3, 2, 3, 3, 3, 2, 2, 3, 5, 2, 3, 1, 3, 3, 2, 1, 4, 2, 3, 3, 4, 2, 2, 3, 4, 2, 3, 1, 5, 2, 2, 3, 3...
[ "nonn" ]
A309540
[ 10, 102, 12, 21, 120, 103, 30, 130, 104, 14, 41, 124, 123, 23, 32, 132, 125, 25, 52, 152, 126, 16, 61, 106, 105, 50, 150, 107, 70, 170, 108, 18, 81, 128, 127, 27, 72, 172, 129, 29, 92, 192, 142, 134, 34, 43, 143, 140, 10...
[ "nonn", "base", "fini", "full", "look" ]
A278833
[ 0, 6, 11, 16, 58, 178, 195, 273, 695, 862, 989, 2477, 2619 ]
[ "nonn", "base", "fini", "full" ]
A035466
[ 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5, 6, 6, 7, 8, 8, 8, 9, 10, 12, 12, 14, 14, 15, 16, 17, 19, 22, 22, 24, 25, 27, 29, 32, 34, 38, 39, 42, 44, ...
[ "nonn" ]
A125066
[ 4, 4, 39, 58, 214, 502, 1621, 3958, 12295, 30962, 91967, 245143, 720699 ]
[ "nonn" ]
A199126
[ 1, 1, 1, 3, 6, 5, 19, 37, 29, 124, 240, 182, 834, 1614, 1198, 5746, 11137, 8142, 40336, 78332, 56620, 287358, 559134, 400598, 2071558, 4038130, 2872754, 15079270, 29443040, 20824778, 110653854, 216379650, 152303410, 817542980, 1600817660 ]
[ "nonn" ]
A006265
[ 1, 1, 2, 1, 4, 6, 4, 17, 32, 44, 60, 70, 184, 476, 872, 1553, 2720, 4288, 6312, 9004, 16088, 36900, 82984, 174374, 346048, 653096, 1199384, 2160732, 3812464, 6617304, 11307920, 18978577, 31327104, 51931296, 90400704, 170054336, 341729616, 711...
[ "nonn" ]
A076994
[ 2, 3, 5, 7, 13, 23, 43, 85, 167, 331, 661, 1321, 2641, 5281, 10561, 21121, 42241, 84481, 168961, 337921, 675841, 1351681, 2703361, 5406721, 10813441, 21626881, 43253761, 86507521, 173015041, 346030081, 692060161, 1384120321, 2768240641 ]
[ "nonn" ]
A001447
[ 1, 3, 15, 65, 325, 1575, 7875, 39125, 195625, 976875, 4884375, 24415625, 122078125, 610359375, 3051796875, 15258828125, 76294140625, 381469921875, 1907349609375, 9536744140625, 47683720703125 ]
[ "nonn", "easy" ]
A058611
[ 1, 0, 3, 4, 7, 10, 17, 22, 32, 44, 62, 80, 112, 144, 193, 248, 323, 410, 530, 664, 845, 1054, 1324, 1634, 2037, 2498, 3082, 3760, 4601, 5580, 6789, 8186, 9891, 11876, 14271, 17052, 20393, 24260, 28876, 34224, 40557, 47888, 56540, ...
[ "nonn" ]
A150980
[ 1, 2, 9, 36, 172, 764, 3738, 17394, 85969, 409193, 2032180, 9802215, 48810329, 237464514, 1184244681, 5795208834, 28927219072, 142152883742, 709968042801, 3499753601881, 17485492844132, 86398426550561, 431766989347839, 2137373482226085, 10682993115440130, 5296177089...
[ "nonn", "walk" ]
A185812
[ 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 3, 1, 1, 1, 6, 5, 4, 1, 1, 1, 12, 12, 7, 5, 1, 1, 1, 27, 26, 19, 9, 6, 1, 1, 1, 63, 63, 43, 27, 11, 7, 1, 1, 1, 154, 153, 110, 63, 36, 13, 8, 1, 1, 1, 386, 386, 275...
[ "nonn", "tabl" ]
A185300
[ 1, 11, 12, 13, 15, 16, 18, 19, 20, 21, 23, 25, 27, 29, 30, 31, 32, 34, 35, 37, 43, 45, 50, 51, 52, 53, 54, 56, 57, 58, 59, 61, 65, 70, 72, 73, 75, 78, 79, 81, 85, 87, 89, 91, 92, 95, 97, 98, 101, 102, 104, 106, 1...
[ "nonn", "base", "easy" ]
A083970
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 25, 30, 33, 36, 40, 44, 45, 48, 50, 55, 60, 66, 70, 75, 77, 80, 88, 90, 99, 100, 101, 110, 111, 120, 121, 125, 131, 132, 141, 150, 151, 161, 165, 168, 171,...
[ "base", "nonn" ]
A363884
[ 1, 1, 5, 41, 777, 38749, 5552904, 2358289931 ]
[ "nonn", "more", "hard" ]
A164012
[ 0, 31, 62, 87, 124, 115, 186, 147, 232, 207, 250, 242, 372, 312, 364, 405, 464, 476, 558, 570, 640, 693, 726, 782, 888, 925, 962, 1026, 1092, 1160, 1230, 1302, 1376, 1452, 1530, 1610, 1692, 1776, 1862, 1950, 2040, 2132, 2226, 2322...
[ "nonn" ]
A134730
[ 2, 3, 5, 1, 1, 2, 3, 2, 9, 4, 1, 5, 3, 8, 3, 8, 9, 1, 1, 3, 1, 3, 1, 1, 7, 3, 1, 7, 9, 1, 9, 1, 2, 3, 3, 2, 3, 9, 2, 5, 1, 2, 8, 1, 2, 9, 3, 3, 5, 9, 4, 1, 9, 4, 3, 1, 4, 4, 3, 4, 9, 1, 5, 0...
[ "easy", "nonn", "base" ]
A000485
[ 16, 125, 680, 3135, 13155, 51873, 195821, 715614, 2550577, 8911942, 30640888, 103951415, 348724844, 1158722880, 3818514232, 12493703403, 40620949971, 131336770375, 422536529249, 1353341880777, 4317248276746, 13722302173753 ]
[ "nonn" ]
A027766
[ 6, 49, 224, 756, 2100, 5082, 11088, 22308, 42042, 75075, 128128, 210392, 334152, 515508, 775200, 1139544, 1641486, 2321781, 3230304, 4427500, 5985980, 7992270, 10548720, 13775580, 17813250, 22824711, 28998144, 36549744, 45726736, 56810600, 70120512, 8601...
[ "nonn", "easy" ]
A039749
[ 1, 1, 3, 9, 32 ]
[ "dead" ]
A129661
[ 1, 2, 4, 8, 112, 10528, 3916416, 453977888, 5984725643520, 24757413551258750, 3.654491329128407e+22, 3.209228105587402e+27, 2.060853966424534e+32 ]
[ "nonn", "frac", "easy" ]
A337429
[ 2, 7, 29, 19, 641, 41, 541, 1597, 22993, 397, 5521, 303293, 380881, 25117, 210466621, 508771, 1573071713, 108991369171, 1343341, 2724783836059, 39558401, 2525293, 4807441, 215038823, 1173553, 61001, 16463734208221, 3813697527769, 58116853330557840, 327866809...
[ "nonn" ]
A138145
[ 1, 11, 111, 1111, 11111, 111111, 1110111, 11100111, 111000111, 1110000111, 11100000111, 111000000111, 1110000000111, 11100000000111, 111000000000111, 1110000000000111, 11100000000000112, 111000000000000110 ]
[ "easy", "nonn", "base" ]
A129671
[ 2, 3, 11, 13, 17, 19, 59, 67, 89, 97, 337, 449, 487, 2437 ]
[ "nonn", "fini", "full", "base" ]
A376684
[ 1, 3, 4, 9, 12, 27, 50, 109, 224, 471, 942, 1773, 3118, 4957, 7038, 9373, 16256, 55461, 150622, 346763, 718972, 1377101, 2462220, 4114987, 6387718, 9112455, 12051830, 17160117, 40946860, 134463917, 349105370, 800713921, 1684145408, 3297536923, 6040...
[ "nonn" ]
A156851
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[ "nonn", "base" ]
A203041
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[ "nonn" ]
A344347
[ 2, 3, 5, 10, 33, 55, 82, 129, 136, 145, 261, 351, 385, 406, 442, 513, 649, 897, 1090, 2241, 4726, 5185, 8650, 13601, 17101, 17641, 18241, 26625, 26937, 29697, 29953, 32896, 34561, 35841, 38417, 44955, 46081, 46593, 51985, 63505, 65703, ...
[ "nonn" ]
A370641
[ 0, 1, 1, 2, 3, 5, 9, 15, 32, 45, 67, 98, 141, 197, 263, 358, 1201, 1493, 1920, 2482, 3123, 3967, 4884, 6137, 7584, 9369, 11169, 13664, 15818, 19152, 22418, 26905, 151286, 173409, 202171, 237572, 273651, 320040, 367792, 428747, 485697, ...
[ "nonn" ]
A374246
[ 0, 0, 0, 1, 0, 0, 0, 2, 1, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 2, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 5...
[ "nonn" ]
A115962
[ 1, 0, 2, 2, 6, 12, 26, 60, 130, 300, 672, 1540, 3514, 8064, 18552, 42756, 98802, 228624, 530024, 1230372, 2860000, 6655792, 15505932, 36159552, 84398626, 197154984, 460903796, 1078251044, 2524144224, 5912535672, 13857378300, 32495267712 ]
[ "easy", "nonn" ]
A123967
[ 1, -5, 1, 24, -10, 1, -115, 73, -15, 1, 551, -470, 147, -20, 1, -2640, 2828, -1190, 246, -25, 1, 12649, -16310, 8631, -2400, 370, -30, 1, -60605, 91371, -58275, 20385, -4225, 519, -35, 1, 290376, -501150, 374115, -157800, 41140, -6790...
[ "tabl", "sign" ]
A337524
[ 0, 2, 2, 6, 2, 12, 2, 12, 6, 12, 2, 30, 2, 12, 12, 20, 2, 30, 2, 30, 12, 12, 2, 56, 6, 12, 12, 30, 2, 56, 2, 30, 12, 12, 12, 72, 2, 12, 12, 56, 2, 56, 2, 30, 30, 12, 2, 90, 6, 30, 12, 30, 2, 56, 12, 56, 1...
[ "nonn", "easy" ]
A327701
[ 1, 20, 3, 107, 5, 310, 7, 668, 909, 1253, 11, 2082, 13, 3224, 3880, 4670, 17, 6558, 19 ]
[ "nonn", "base", "more" ]
A305933
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 19, 23, 24, 26, 27, 28, 31, 34, 68, 10, 15, 16, 17, 18, 20, 25, 29, 43, 47, 50, 52, 63, 72, 73, 22, 30, 32, 33, 36, 38, 39, 40, 41, 42, 44, 45, 46, 48, 51, 53, 56...
[ "nonn", "base", "tabf" ]
A127206
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[ "nonn" ]
A260599
[ 1, 2, 3, 6, 10, 16, 25, 38, 55, 80, 115, 160, 223, 306, 415, 560, 747, 988, 1301, 1700, 2206, 2850, 3661, 4676, 5950, 7536, 9500, 11936, 14936, 18620, 23141, 28662, 35386, 43566, 53480, 65466, 79937, 97356, 118277, 143370, 173391, 209...
[ "nonn" ]
A073860
[ 2, 7, 503, 1889, 30367 ]
[ "fini", "full", "nonn" ]
A113579
[ 13, 137, 13711, 137119, 137119111, 13711911133, 1371191113399, 1371191113399717, 1371191113399717000, 1.371191113399717e+21, 1.3711911133997173e+24, 1.3711911133997172e+28, 1.3711911133997172e+32, 1.3711911133997171e+35 ]
[ "base", "nonn" ]
A067578
[ 1, 2, 5, 12, 52, 120, 752, 3200, 19968, 84480, 863232, 3637248, 44384256, 275152896, 2254307328, 18459131904, 298743496704, 1846819160064, 33568893960192, 274421835104256, 3340027488632832, 33963860494909440, 752840786973818900, 6146715129678397000, 123926213264670720...
[ "nonn" ]
A154707
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[ "nonn", "cons" ]
A325307
[ 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 5, 1, 6, 1, 1, 1, 6, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 1, 1, 10, 1, 1, 1, 1, 1, 1, 12, 1, 1, 1, 1, 1, 1, 11, 1, 1, 1, 11,...
[ "nonn" ]
A012379
[ 1, 0, -12, -360, -14000, -705600, -42520896, -2581394816, -50539790080, 43910434596864, 18893865109070850, 6357906196273494000, 1.8950769991471333e+21, 3.663715617540099e+23, -1.7692696205656965e+26, -3.9790813670095635e+29, -5.288999496447451e+32 ]
[ "sign" ]
A115524
[ 1, 1, -1, -1, 0, 1, 0, 0, 1, -1, 0, -1, 0, 0, 1, 0, 0, 0, 0, 1, -1, 0, 0, -1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, -1, 0, 0...
[ "easy", "sign", "tabl" ]
A235998
[ 1, 2, 2, 2, 3, 5, 2, 14, 4, 22, 6, 2, 44, 18, 4, 68, 56, 3, 107, 146, 4, 172, 312, 24, 2, 261, 677, 84, 6, 396, 1358, 288, 2, 606, 2666, 822, 4, 950, 5012, 2226, 4, 1414, 9542, 5304, 120, 5, 2238, 17531, 12514, 480, ...
[ "nonn", "tabf", "nice", "look" ]
A332959
[ 1, 3, 12, 15, 180, 240, 105, 5040, 6720, 7000, 945, 151200, 352800, 315000, 272160, 10395, 6029100, 21067200, 20790000, 17962560, 13311144, 135135, 276215940, 1387386000, 1765764000, 1471133664, 1211314104, 787218432, 2027025, 14983768800, 105945840000, ...
[ "nonn", "tabl", "easy" ]
A056835
[ 1, 6, 30, 60, 420, 420, 1260, 1260, 1260, 13860, 27720, 360360, 360360, 360360, 360360, 6126120, 6126120, 6126120, 116396280, 116396280, 116396280, 116396280, 116396280, 116396280, 2677114440, 5354228880, 26771144400 ]
[ "nonn" ]
A247108
[ 1, -1, 0, 0, -1, -1, 1, 1, 0, -1, 1, 2, 3, 3, 2, -2, -1, 1, 4, 7, 9, -9, -11, -12, -11, -7, 0, 9, -9, -18, -29, -41, -52, -59, -59, -50, 50, 41, 23, -6, -47, -99, -158, -217, -267, 267, 317, 358, 381, 375, 328, 229...
[ "sign", "tabl" ]
A089451
[ 1, -1, 0, 1, 1, 0, 0, 0, 1, 0, -1, 0, 0, -1, 1, 0, 1, 0, -1, -1, 0, -1, 1, 0, 0, 0, -1, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0, 0, 1, -1, 1, 0, 0, -1, 0, 0, 0, 1, 0, 0, 0, 0, -1, ...
[ "sign" ]
A354670
[ 13, 60, 262, 957, 2934, 7786, 18434, 39869, 80166, 151830, 273540, 472363, 786516, 1268760, 1990516, 3046799, 4562072, 6697128, 9657114, 13700817, 19151338, 26408286, 35961630, 48407353, 64465058, 84997682, 111033480, 143790447, 184703352, 235453564 ]
[ "nonn", "easy" ]
A376801
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[ "nonn" ]
A094499
[ 13, 97, 17, 3041, 1153, 769, 257, 72222721, 4043777, 2330249132033, 625483777, 286721, 14496395542529, 2752513, 65537, 319291393, 54498164737 ]
[ "nonn" ]
A214945
[ 0, 42, 696, 4260, 16680, 50190, 126672, 281736, 569520, 1068210, 1886280, 3169452, 5108376, 7947030, 11991840, 17621520, 25297632, 35575866, 49118040, 66704820, 89249160, 117810462, 153609456, 198043800, 252704400, 319392450, 400137192 ]
[ "nonn" ]
A222846
[ 48, 4896, 2088576, 176032212, 32109350238, 2840442492432, 390221848074006, 35301603090759852 ]
[ "nonn" ]