N8Programs/oeis-enhanced · Datasets at Hugging Face

id stringlengths 7 11	seq listlengths 1 347	keywords listlengths 1 8 ⌀
A006489	[ 11, 13, 17, 23, 37, 47, 53, 67, 73, 103, 107, 157, 173, 233, 257, 263, 277, 353, 373, 563, 593, 607, 613, 647, 653, 733, 947, 977, 1097, 1103, 1123, 1187, 1223, 1283, 1297, 1367, 1433, 1453, 1487, 1493, 1607, 1613, 1663, 1747, 1...	[ "nonn", "nice", "easy" ]
A370118	[ 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0...	[ "nonn" ]
A183053	[ 0, 12, 28, 48, 88, 148, 220, 312, 440, 588, 772, 1000, 1248, 1548, 1908, 2288, 2728, 3244, 3788, 4400, 5096, 5828, 6644, 7552, 8496, 9540, 10692, 11880, 13176, 14596, 16060, 17640, 19352, 21116, 23012, 25048 ]	[ "nonn" ]
A023636	[ 1, 3, 2, 1, 3, 4, 1, 2, 3, 1, 2, 2, 1, 4, 3, 1, 2, 4, 1, 3, 4, 1, 2, 2, 1, 3, 2, 1, 4, 3, 1, 2, 2, 1, 4, 2, 1, 3, 2, 1, 2, 4, 1, 3, 4, 1, 2, 3, 1, 4, 2, 1, 2, 3, 1, 2, 4, 1, 3, 4, 1, 2, 2, 1...	[ "nonn" ]
A270872	[ 13, 2278, 19439, 117910, 550009, 2072078, 6584443, 18269614, 45445445, 103390294, 218437543, 433677158, 816642289, 1469399230, 2541499379, 4246292158, 6881138173, 10852102214, 16703746015, 25154681014, 37139581673, 53858400238, 76833564139, 107975977550 ]	[ "nonn", "easy" ]
A006439	[ 4, 152, 2630, 31500, 303534, 2530976, 19030428, 132386340, 866782510, 5405853200 ]	[ "nonn", "more" ]
A165191	[ 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1...	[ "nonn", "easy", "tabf" ]
A231763	[ 9409, 440896, 30958096, 2217939025, 146247350929, 9934984224361, 682267982467600, 46367367209812220, 3151689997684400600, 214862774587748800000, 1.4634892191955776e+22, 9.961915378992972e+23 ]	[ "nonn" ]
A012524	[ 2, -128, 50432, -63423488, 186761510912, -1077443663495168, 10868880846196048000, -1.767074103219416e+23, 4.359687422323729e+27 ]	[ "sign" ]
A211657	[ 1, 3, 4, 7, 6, 8, 15, 13, 28, 14, 39, 20, 36, 40, 30, 63, 91, 38, 44, 78, 57, 93, 62, 127, 68, 195, 74, 121, 112, 171, 217, 102, 162, 110, 133, 255, 176, 160, 204, 138, 222, 266, 150, 300, 158, 363, 164, 183, 260, 174,...	[ "nonn" ]
A159749	[ 2, 2, 4, 2, 12, 16, 0, 24, 96, 96, -8, 0, 320, 960, 768, 0, -240, 0, 4800, 11520, 7680, 240, 0, -6720, 0, 80640, 161280, 92160, 0, 13440, 0, -188160, 0, 1505280, 2580480, 1290240, -24192, 0, 645120, 0, -5419008, 0, 30965760, 46448...	[ "sign", "tabl" ]
A019503	[ 1, 2, 5, 16, 67, 308, 1493 ]	[ "nonn", "hard", "nice", "more" ]
A056329	[ 0, 0, 0, 0, 1, 9, 76, 542, 3523, 21393, 123680, 690550, 3756151, 20042589, 105394296, 548123982, 2826435403, 14479204833, 73794961960, 374603884910, 1895632969351, 9568915372269, 48208452866816 ]	[ "nonn" ]
A270619	[ 1, 4, 32, 160, 757, 2908, 12468, 50740, 205792, 827900, 3324088, 13294177, 53209272, 212851437, 851490496, 3406377481 ]	[ "nonn", "more" ]
A326115	[ 1, 1, 2, 2, 2, 2, 4, 4, 6, 6, 12, 12, 12, 12, 24, 24, 32, 32, 64, 64, 64, 64, 128, 128, 192, 192, 384, 384, 384, 384, 768, 768, 960, 960, 1920, 1920, 1920, 1920, 3840, 3840, 5760, 5760, 11520, 11520, 11520, 11520, 23040, 2...	[ "nonn" ]
A260137	[ 1880, 8998, 61914, 266156, 1340176, 7839850, 39696994, 200149838, 1081436482, 5672351526, 29202675242, 153702924266, 807944925446, 4206057040818, 22004575402798, 115383468865762, 603019794931990, 3152862366134910 ]	[ "nonn" ]
A365395	[ 1, 1, 1, 2, 1, 3, 2, 4, 1, 5, 3, 6, 2, 7, 4, 2, 1, 8, 5, 9, 3, 10, 6, 3, 2, 11, 7, 7, 4, 12, 2, 4, 1, 13, 8, 14, 5, 15, 9, 5, 3, 16, 10, 11, 6, 17, 3, 6, 2, 18, 11, 10, 7, 19, 7, 7, 4, 17, 12, 20, ...	[ "nonn" ]
A331489	[ 1, 2, 7, 8, 16, 19, 28, 32, 43, 53, 56, 64, 76, 98, 107, 112, 128, 131, 152, 163, 172, 196, 212, 224, 227, 256, 263, 266, 304, 311, 343, 344, 383, 392, 424, 428, 443, 448, 512, 521, 524, 532, 577, 602, 608, 613, 652, 686, ...	[ "nonn" ]
A068203	[ 1, 15, 449, 13455, 403201, 12082575, 362074049, 10850138895, 325142092801, 9743412645135, 291977237261249, 8749573705192335, 262195233918508800, 7857107443850072000, 235451028081583650000, 7.055673735003659e+21, 2.114347610220282e+23 ]	[ "nonn", "easy" ]
A167519	[ 3, 10, 11, 12, 11000, 11111, 11112, 11113, 11114, 11115, 11116, 11117, 11118, 11119, 11121, 11122, 11123, 11124, 11125, 11126, 11127, 11128, 11129, 11131, 11132, 11133, 11134, 11135, 11136, 11137, 11138, 11139, 11141, 11142, 11143, 11144 ]	[ "nonn", "base" ]
A117585	[ 1, 3, 9, 24, 61, 151, 369, 896, 2169, 5243, 12665, 30584, 73845, 178287, 430433, 1039168, 2508785, 6056755, 14622313, 35301400, 85225133, 205751687, 496728529, 1199208768, 2895146089, 6989500971, 16874148057, 40737797112, 98349742309 ]	[ "nonn" ]
A296373	[ 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 6, 5, 3, 1, 1, 9, 12, 6, 3, 1, 1, 18, 21, 14, 6, 3, 1, 1, 30, 45, 27, 15, 6, 3, 1, 1, 56, 84, 61, 29, 15, 6, 3, 1, 1, 99, 170, 120, 67, 30, 15, 6, 3, 1, 1, 186, 323, 254, ...	[ "nonn", "tabl" ]
A368764	[ 1, 2, 9, 42, 203, 1085, 6636, 46662, 373626, 3363129, 33632005, 369953056, 4439438037, 57712696301, 807977750594, 12119666261970, 193914660195396, 3296549223326577, 59337886019884370, 1127419834377810300, 22548396687556215000, 473516330438680600000 ]	[ "nonn" ]
A312957	[ 1, 4, 9, 13, 18, 24, 26, 32, 38, 41, 46, 54, 57, 59, 66, 71, 76, 79, 86, 91, 92, 101, 101, 110, 114, 118, 124, 125, 135, 135, 141, 147, 154, 156, 156, 171, 167, 175, 179, 187, 191, 188, 204, 200, 209, 213, 218, 225, 222,...	[ "nonn" ]
A049849	[ 0, 0, 0, 0, 1, 1, 1, 1, 4, 2, 2, 3, 1, 3, 6, 7, 5, 5, 4, 8, 5, 5, 10, 9, 6, 4, 5, 7, 8, 9, 6, 8, 8, 6, 8, 7, 5, 8, 9, 10, 13, 7, 10, 9, 8, 9, 8, 7, 7, 11, 11, 14, 13, 14, 15, 15, 8, 9, 12, 5, 17, ...	[ "nonn" ]
A167228	[ 0, 1, 1, 4, 6, 7, 11, 16, 16, 26, 29, 30, 42, 47, 48, 64, 72, 70, 89, 104, 90, 119, 131, 124, 162, 170, 158, 190, 210, 202, 239, 256, 232, 290, 308, 286, 342, 359, 332 ]	[ "nonn" ]
A033171	[ 365, 730, 1095, 1461, 1826, 2191, 2556, 2922, 3287, 3652, 4017, 4383, 4748, 5113, 5478, 5844, 6209, 6574, 6939, 7305, 7670, 8035, 8400, 8766, 9131, 9496, 9861, 10227, 10592, 10957, 11322, 11688, 12053, 12418, 12783, 13149, 13514, 13879 ]	[ "easy", "nonn" ]
A063411	[ 0, 0, 0, 5040, 6249600, 15958978560, 138492255928320, 3264016697241108500, 1.6708353497756892e+23, 2.6809984170742143e+28, 1.5381567503446461e+34 ]	[ "nonn" ]
A226944	[ 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, 450, 462, 480, 510, 540, 546, 570, 600, 630, 660, 690, 714, 720, 750, 780, 798, 810, 840, 858, 870, 900, 924, 930, 960, 966, 990, 1020, 1050, 1080, 1092, 1110, ...	[ "nonn" ]
A256244	[ 3, 2, 3, 4, 3, 4, 3, 4, 5, 4, 5, 4, 5, 4, 5, 6, 5, 6, 5, 6, 5, 6, 5, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 8, 7, 8, 7, 8, 7, 8, 7, 8, 7, 8, 7, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 1...	[ "nonn", "easy" ]
A272234	[ 9, 245, 128, 125, 32, 214375, 250, 9, 2057, 2197, 2187, 5021875, 256, 658503, 85184, 6875, 5120, 148046893, 6144, 19683, 327701, 23882769, 2048, 1830125, 729, 3536405, 32, 50653, 19712, 75926359382399, 19683, 81, 2000033, 793071909, 4131, 3130468...	[ "nonn" ]
A242924	[ 1, 2, 4, 8, 12, 66, 24, 34, 233, 251, 284, 173, 104, 299, 329, 431, 596, 625, 528, 1052, 759, 349, 667, 1028, 793, 436, 1242, 1882, 1410, 1374, 4974, 1181, 3626, 3517, 3673, 3148, 4398, 6160, 5537, 4254, 5512, 7039, 4074, 2194, ...	[ "nonn" ]
A317701	[ 1, 272, 5114, 242908, 11013057, 508895558, 23660712291, 1103426578662, 51504728212214, 2405230028991235, 112343236438058700, 5247698593127587000, 245134541408802570000, 1.1451062337945565e+22, 5.349206046691532e+23 ]	[ "nonn" ]
A295541	[ 1, -1, 3, -21, 180, -1728, 17766, -191322, 2130381, -24328755, 283378095, -3353616513, 40209584220, -487400777388, 5963013401400, -73536394960872, 913148848213740, -11408099402698488, 143288658075653380, -1808347110471143400, 22919638640740372000, -291612557490911400000, ...	[ "sign" ]
A201667	[ 3, 1, 0, 5, 7, 9, 1, 2, 2, 9, 3, 6, 3, 0, 8, 2, 2, 7, 7, 9, 2, 8, 9, 6, 7, 9, 3, 1, 6, 1, 4, 3, 1, 4, 3, 0, 3, 5, 9, 5, 3, 6, 9, 7, 6, 5, 5, 5, 2, 9, 1, 7, 0, 3, 3, 2, 2, 8, 1, 2, 7, 8, 5, 1...	[ "nonn", "cons" ]
A115714	[ 1, -1, -3, 0, 1, -5, 1, 0, -3, -1, 1, -4, 1, -1, -3, 0, 1, -5, 1, 0, -3, -1, 1, -4, 1, -1, -3, 0, 1, -5, 1, 0, -3, -1, 1, -4, 1, -1, -3, 0, 1, -5, 1, 0, -3, -1, 1, -4, 1, -1, -3, 0, 1, -5, 1, 0, -3, -1,...	[ "easy", "sign" ]
A082960	[ 1, 0, 1, 1, 0, 0, 1, 0, 1 ]	[ "nonn" ]
A122704	[ 1, 1, 4, 22, 160, 1456, 15904, 202672, 2951680, 48361216, 880405504, 17630351872, 385148108800, 9114999832576, 232311251144704, 6343764407375872, 184778982658539520, 5718564661248066000, 187389427488113560000, 6.481629887083388e+21, 2.3599335102800735e+23 ]	[ "nonn", "easy", "changed" ]
A110930	[ 1, 3, 7, 17, 37, 79, 163, 331, 673, 1361, 2729, 5471, 10949, 21911, 43853, 87719, 175447, 350899, 701819, 1403641, 2807303, 5614657, 11229331, 22458671, 44917381, 89834777, 179669557, 359339171, 718678369, 1437356741, 2874713497 ]	[ "nonn" ]
A273933	[ 60074174160, 71957405520, 75710489400, 96058282320, 96058282320, 97306569360, 96759542880, 94972878000, 109117562400 ]	[ "nonn", "more" ]
A164755	[ 8, 80, 258, 480, 644, 752, 850, 956, 1070, 1184, 1298, 1412, 1526, 1640, 1754, 1868, 1982, 2096, 2210, 2324, 2438, 2552, 2666, 2780, 2894, 3008, 3122, 3236, 3350, 3464, 3578, 3692, 3806, 3920, 4034, 4148, 4262 ]	[ "nonn" ]
A332165	[ 5, 656, 66566, 6665666, 666656666, 66666566666, 6666665666666, 666666656666666, 66666666566666664, 6666666665666666000, 666666666656666600000, 6.666666666656666e+22, 6.666666666665667e+24, 6.666666666666567e+26, 6.666666666666657e+28, 6.666666666666666e+30 ]	[ "nonn", "base", "easy" ]
A127894	[ 1, -3, 1, 12, -6, 1, -55, 33, -9, 1, 273, -182, 63, -12, 1, -1428, 1020, -408, 102, -15, 1, 7752, -5814, 2565, -760, 150, -18, 1, -43263, 33649, -15939, 5313, -1265, 207, -21, 1, 246675, -197340, 98670, -35880, 9750, -1950, 273, -...	[ "sign", "tabl" ]
A151041	[ 1, 3, 9, 33, 129, 511, 2110, 8855, 37630, 162562, 707441, 3105186, 13739266, 61089049, 273188714, 1227301479, 5534051578, 25051273980, 113748350238, 517968113869, 2365096349789, 10823958151853, 49646711304843, 228176908323882, 1050601462096454, 4845768031863803, 2...	[ "nonn", "walk" ]
A074318	[ 4, 50064, 2.084924134437041e+44 ]	[ "nonn", "bref" ]
A256671	[ 1, -1, 2, -1, -1, 1, -1, -1, 7, 5, -2663, -691, 1247, 7, -1511, -3617, 1623817, 43867, -10405289, -174611, 21491081, 854513, -2523785339, -236364091, 1827648887, 8553103, -11254630547, -23749461029, 596303510772251, 8615841276005 ]	[ "sign", "frac" ]
A357227	[ 1, 1, 5, 27, 156, 961, 6145, 40546, 273784, 1883468, 13153544, 93012247, 664640794, 4791939802, 34816034143, 254659426691, 1873698891024, 13858201221637, 102975937795619, 768385165594607, 5755185884844403, 43253819566052170, 326093530416255170, 2465456045342546000 ]	[ "nonn" ]
A045129	[ 85, 277, 325, 337, 340, 342, 345, 357, 405, 597, 1045, 1093, 1105, 1108, 1110, 1113, 1125, 1173, 1285, 1297, 1300, 1302, 1305, 1317, 1345, 1348, 1350, 1353, 1360, 1362, 1368, 1370, 1377, 1380, 1382, 1385, 1413, 1425, 1428 ]	[ "nonn", "base" ]
A161735	[ 17, 73, 113, 131, 229, 409, 443, 617, 673, 739, 953, 1153, 1171, 1889, 2393, 5087, 6217, 6553, 8669, 9433, 9973, 11321, 11897, 13877, 14633, 14737, 15823, 17377, 18539, 19081, 19441, 20393, 20611, 21841, 25469, 26249, 26833, 28649, 29599 ]	[ "nonn" ]
A276137	[ 0, 1, 3, 5, 7, 9, 10, 11, 13, 15, 17, 19, 30, 31, 33, 35, 37, 39, 50, 51, 53, 55, 57, 59, 70, 71, 73, 75, 77, 79, 90, 91, 93, 95, 97, 99, 100, 101, 103, 105, 107, 109, 110, 111, 113, 115, 117, 119, 130, 131, 133, 1...	[ "nonn", "base", "easy" ]
A388484	[ 2, 9, 3, 3, 3, 3, 5, 2, 8, 8, 2, 6, 8, 1, 7, 0, 4, 9, 1, 7, 3, 0, 2, 1, 7, 5, 6, 3, 9, 4, 7, 3, 8, 4, 7, 8, 6, 2, 7, 1, 0, 4, 8, 1, 1, 2, 6, 0, 5, 2, 2, 4, 2, 6, 4, 1, 6, 3, 6, 4, 8, 5, 8, 4...	[ "nonn", "cons" ]
A252264	[ 258, 822, 3016, 10302, 35486, 122506, 420420, 1446744, 4990438, 17183040, 59122262, 203560110, 701041422, 2413836036, 8310468310, 28613117804, 98520290558, 339220390780, 1167963347912, 4021394031518, 13846106821008, 47673737497992, 164145642402238, 565170049989314 ]	[ "nonn" ]
A317115	[ 16, 420, 3398, 37221, 392393, 4237829, 45938893, 497129492, 5387633738, 58350081443, 632133529266, 6847527128492, 74177538970732, 803540864229906, 8704502381388118, 94293146311572130, 1021447666436460300 ]	[ "nonn" ]
A080557	[ 3, 9, 27, 81, 225, 507, 912, 1236, 1587, 1782, 1977, 2046, 2070, 1947, 1680, 1275, 951, 600, 402, 201, 114, 36, 15 ]	[ "nonn", "fini", "full" ]
A200747	[ 0, 1, 2, 2, 3, 1, 2, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 4, 2, 1, 2, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 4, 2, 3, 4, 4, 2, 2, 3, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 4, 2, 3, 4, 4, 2, 2...	[ "nonn" ]
A015823	[ 3, 6, 11, 14, 23, 24, 30, 33, 35, 54, 59, 66, 71, 77, 99, 102, 105, 107, 110, 119, 131, 140, 158, 161, 167, 168, 174, 179, 186, 203, 222, 231, 239, 251, 253, 280, 287, 290, 304, 311, 312, 329, 347, 348, 357, 359, 366, 371,...	[ "nonn" ]
A328277	[ 304, 153, 157, 197, 124, 97, 221, 156, 69, 171, 73, 88, 142, 68, 69, 129, 73, 81, 86, 62, 46, 189, 88, 40, 67, 48, 51, 24, 89, 80, 77, 31, 63, 68, 41, 20, 0, 132, 80, 90, 58, 32, 63, 99, 37, 0, 106, 69, 79, 50, 30, ...	[ "nonn", "base", "tabl", "fini" ]
A228846	[ 1, 2, 4, 8, 16, 7, 8, 9, 11, 16, 14, 14 ]	[ "nonn", "hard", "more" ]
A096816	[ 1, 2, 3, 5, 9, 15, 26, 44, 75, 129, 220, 378, 648, 1114, 1910, 3284, 5635, 9677, 16608, 28501, 48930, 83973, 144150, 247396, 424612, 728577, 1250185, 2144858, 3679772, 6313029, 10830673, 18581706, 31880471, 54698330, 93847987, 161021223 ]	[ "nonn" ]
A253665	[ 1, 2, 8, 48, 96, 960, 1280, 17920, 17920, 322560, 258048, 5677056, 3784704, 98402304, 56229888, 1686896640, 843448320, 28677242880, 12745441280, 484326768640, 193730707456, 8136689713152, 2958796259328, 136104627929088, 45368209309696, 2268410465484800 ]	[ "nonn" ]
A246941	[ 1, 9, 90, 819, 7461, 67239, 606051, 5455359, 49106502, 441967518, 3977783082, 35800130448, 322201861893, 2899817511237, 26098363809063, 234885281153616, 2113967586352095, 19025708339182544, 171231375557145820, 1541082380573345300, 13869741429702220000 ]	[ "nonn" ]
A086070	[ 1, 2, 3, 5, 7, 11, 13, 15, 23, 27, 29, 31, 47, 55, 59, 61, 63, 95, 111, 119, 123, 125, 127, 191, 223, 239, 247, 251, 253, 255, 383, 447, 479, 495, 503, 507, 509, 511, 767, 895, 959, 991, 1007, 1015, 1019, 1021, 1023 ]	[ "nonn", "fini", "full" ]
A261681	[ 1, 2, 5, 10, 21, 41, 83, 162, 325, 637, 1275, 2509, 5019, 9907, 19815, 39202, 78405, 155381, 310763, 616665, 1233331, 2449867, 4899735, 9740685, 19481371, 38754731, 77509463, 154276027, 308552055, 614429671, 1228859343, 2448023842, 4896047685, 975673...	[ "nonn" ]
A264128	[ 1, 2, 2, 4, 9, 4, 8, 45, 45, 8, 16, 200, 576, 200, 16, 32, 845, 5733, 5733, 845, 32, 64, 3549, 53361, 108045, 53361, 3549, 64, 128, 14994, 533610, 1995525, 1995525, 533610, 14994, 128, 256, 63525, 5336100, 39592980, 79655625, 39592980...	[ "nonn", "tabl" ]
A324912	[ 1, 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" ]
A195541	[ 5, 12, 44, 51, 280, 949, 103488, 133416, 4142957, 81015132, 141119360, 2339121011, 22104171804, 658972588452, 461228244281, 3140753982224, 7467448353120, 49702513350325, 3912991025369532, 130254818350668560, 177768662787348700000 ]	[ "nonn" ]
A370001	[ 2, 3, 5, 8, 13, 23, 41, 77, 152 ]	[ "nonn", "more" ]
A085397	[ 2, 3, 6, 7, 10, 11, 12, 14, 15, 18, 19, 22, 23, 24, 26, 28, 30, 31, 34, 35, 38, 39, 40, 42, 43, 44, 46, 47, 48, 50, 51, 54, 55, 56, 58, 59, 60, 62, 63, 66, 67, 70, 71, 72, 74, 75, 76, 78, 79, 82, 83, 86, 87, 88...	[ "nonn", "easy" ]
A330755	[ 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 1, 2, 1, 4, 3, 1, 1, 5, 1, 2, 4, 6, 1, 5, 1, 7, 1, 3, 1, 8, 1, 1, 6, 9, 2, 4, 1, 10, 7, 3, 1, 11, 1, 5, 4, 12, 1, 8, 1, 13, 9, 6, 1, 14, 5, 2, 10, 15, 1, 11, 1, 16,...	[ "nonn" ]
A057134	[ 4, 128, 716353536, 1.4178431955039404e+37, 1.1173173274952164e+152 ]	[ "nonn" ]
A099121	[ 1, 3, 21, 220, 3060, 53130, 1107568, 26978328, 752538150, 23667689815, 828931106355, 32006008361808, 1350990969850340, 61902409203193230, 3060335715568296000, 162392216278033630000, 9.206887338937201e+21 ]	[ "nonn" ]
A089173	[ 2, 2, 4, 3, 6, 3, 5, 4, 4, 10, 9, 6, 14, 5, 11, 16, 6, 5, 8, 20, 15, 7, 24, 8, 26, 12, 19, 7, 8, 10 ]	[ "easy", "nonn" ]
A160981	[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 3, 3, 3, 5, 4, 5, 6, 6, 6, 8, 7, 10, 10, 10, 11, 14, 12, 14, 15, 16, 16, 18, 20, 21, 22, 22, 24, 28, ...	[ "nonn" ]
A003665	[ 1, 1, 10, 28, 136, 496, 2080, 8128, 32896, 130816, 524800, 2096128, 8390656, 33550336, 134225920, 536854528, 2147516416, 8589869056, 34359869440, 137438691328, 549756338176, 2199022206976, 8796095119360, 35184367894528, 140737496743936, 562949936644096, 2251799847...	[ "nonn", "easy" ]
A289882	[ 1, 3, 5, 15, 27, 63, 71, 255, 303, 1023, 1439, 4095, 4415, 16383, 21631, 65535, 71423, 262143, 379391, 1048575, 1733631, 4194303, 6064127, 16777215, 16961535, 67108863, 100147199, 268435455, 309805055, 1073741823, 1579712511, 4294967295, 7290159103 ]	[ "nonn", "easy" ]
A096890	[ 401408, 414050, 436032, 455625, 462400, 466608, 476100, 486300, 486900, 512337, 522242, 526974, 543600, 544644, 544944, 546192, 546861, 554304, 559504, 571536, 572313, 575028, 577200, 579856, 583200, 585528, 599694, 604300, 609429, 611618 ]	[ "nonn" ]
A242038	[ 0, 1, 1448, 102275, 2097152, 21836601, 148111277, 747359260, 3037000499, 10460353203, 31622776601, 86024705429, 214488041413, 497055861119, 1082291816449, 2233357359474, 4398046511104, 8312155792152, 15148209527700, 26724698233906 ]	[ "nonn" ]
A241525	[ 19, 17, 13, 521, 509, 503, 499, 491, 14153, 25793, 25771, 37663, 37657, 98729, 98717, 98713, 98711, 98689, 98669, 98663, 98641, 98639, 98627, 98621, 98597, 98573, 69794393, 69794383, 268684679, 268684651, 268684627, 329788829, 545497787, 545497769, ...	[ "nonn", "base" ]
A223567	[ 64, 4096, 153664, 4174016, 97140736, 2137096192, 47016116224, 1034354556928, 22755800252416, 500627605553152, 11013807322169344, 242303761087725570, 5330682743929962000, 117275020366459170000, 2.580050448062102e+21 ]	[ "nonn" ]
A061401	[ 1, 6, 9, 56, -300, 3942, -48412, 639264, -8785098, 124733000, -1817441901, 27047510136, -409669978497, 6297861697848, -98055605511675, 1543575781461888, -24533312413314948, 393242952308487600, -6350814254230702000 ]	[ "sign" ]
A156774	[ 485, 3482, 19601, 48842, 91205, 146690, 215297, 297026, 391877, 499850, 620945, 755162, 902501, 1062962, 1236545, 1423250, 1623077, 1836026, 2062097, 2301290, 2553605, 2819042, 3097601, 3389282, 3694085, 4012010, 4343057, 4687226 ]	[ "nonn", "easy" ]
A053885	[ 1, 121, 2217121, 21127711127121, 1.7177711172112177e+25, 1.711777221721122e+34 ]	[ "nonn", "base", "more" ]
A106936	[ 3, 7, 23, 71, 79, 131, 139, 227, 283, 347, 379, 419, 479, 487, 499, 503, 571, 607, 619, 683, 691, 719, 743, 823, 827, 839, 947, 991, 1031, 1051, 1091, 1151, 1163, 1231, 1303, 1319, 1439, 1451, 1459, 1499, 1559, 1567, 1627, 1723, ...	[ "nonn", "easy" ]
A370276	[ 1, 4, 16, 72, 352, 1816, 9728, 53584, 301568, 1726488, 10022912, 58864240, 349102080, 2087772784, 12576358400, 76237953440, 464736354304, 2847019090712, 17518413479936, 108224749140784, 670996707147776, 4173817417204944, 26040046909915136, 162905940337309800, 10217004...	[ "nonn" ]
A215960	[ 2186, 75938, 745418, 3959426, 14704202, 43261346, 108110858, 239479298, 483533066, 907216802, 1603736906, 2698690178, 4356837578, 6789523106, 10262737802, 15105828866, 21720853898, 30592580258, 42299129546, 57523267202, 77064337226, 101850842018 ]	[ "nonn", "easy" ]
A348636	[ 1, 3, 8, 22, 24, 65, 70, 72, 194, 208, 210, 215, 580, 582, 623, 628, 630, 644, 1738, 1740, 1745, 1867, 1869, 1883, 1888, 1890, 1931, 5212, 5214, 5219, 5233, 5235, 5600, 5605, 5607, 5648, 5662, 5664, 5669, 5791, 5793, 15635, 15640, ...	[ "nonn" ]
A140217	[ 1, 1, 2, 9, 34, 730, 4376, 905345, 10601986, 10009765626, 200097656252, 2177748514672962, 85812416258106780, 4.1427890429801293e+21, 2.8990440321251796e+23, 1.7551903394046053e+29 ]	[ "nonn" ]
A304443	[ 1, 2, 10, 62, 394, 2562, 16966, 113794, 770442, 5254334, 36042250, 248403586, 1718732998, 11931569028, 83064794746, 579696375972, 4054279504266, 28408328186508, 199390547044342, 1401564307833908, 9865190079554954, 69522550703432480, 490484539061916800 ]	[ "nonn" ]
A221720	[ 1, 1, 2, 5, 12, 26, 49, 83, 129, 187, 257, 339, 433, 539, 657, 787, 929, 1083, 1249, 1427, 1617, 1819, 2033, 2259, 2497, 2747, 3009, 3283, 3569, 3867, 4177, 4499, 4833, 5179, 5537, 5907, 6289, 6683, 7089, 7507, 7937, 8379, 8833, 9...	[ "nonn", "easy" ]
A283833	[ 1, 1, 1, 3, 3, 3, 2, 1, 7, 7, 7, 6, 5, 4, 3, 2, 1, 15, 15, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 31, 31, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, ...	[ "nonn" ]
A109266	[ 1, -1, 0, -2, 1, -2, 3, -3, 5, -6, 8, -11, 14, -19, 25, -33, 44, -58, 77, -102, 135, -179, 237, -314, 416, -551, 730, -967, 1281, -1697, 2248, -2978, 3945, -5226, 6923, -9171, 12149, -16094, 21320, -28243, 37414, -49563, 65657, -8...	[ "easy", "sign" ]
A033057	[ 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 42, 43, 44, 45, 46, 47, 54, 55, 56, 57, 58, 59, 66, 67, 68, 69, 70, 71, 78, 79, 80, 81, 82, 83, 90, 91, 92, 93, 94, 95, 102, 103, 104, 10...	[ "nonn", "base" ]
A111970	[ 3, 4, 3, 7, 7, 1, 4, 5, 3, 0, 2, 5, 6, 7, 2, 7, 5, 3, 6, 6, 9, 1, 6, 7, 9, 2, 4, 4, 2, 9, 0, 5, 5, 6, 0, 0, 9, 9, 5, 2, 3, 6, 5, 1, 9, 3, 2, 9, 5, 6, 8, 5, 9, 7, 8, 5, 8, 5, 6, 4, 0, 5, 2, 5...	[ "nonn", "cons" ]
A204584	[ 100, 104, 108, 112, 117, 122, 127, 132, 137, 142, 148, 154, 160, 167, 173, 180, 187, 195, 203, 211, 219, 228, 237, 246, 256, 267, 277, 288, 300, 312, 324, 337, 351, 365, 379, 395, 410, 427, 444, 462, 480, 499, 519, 540, 562, 5...	[ "nonn", "easy" ]
A337969	[ 1, 4, 30, 756, 59778, 14407956, 10474702110, 22887252808164, 150117512089454080, 2.9544628011861305e+21, 1.7445216532182673e+26, 3.090332883184362e+31, 1.6423234171415042e+37, 2.6183907127466404e+43 ]	[ "nonn" ]
A285525	[ 13, 38, 63, 85, 110, 135, 160, 185, 210, 232, 257, 282, 307, 332, 354, 379, 404, 429, 454, 479, 501, 526, 551, 576, 601, 626, 648, 673, 698, 723, 748, 770, 795, 820, 845, 870, 895, 917, 942, 967, 992, 1017, 1042, 1064, 1089, 1...	[ "nonn" ]
A024364	[ 12, 30, 40, 56, 70, 84, 90, 126, 132, 144, 154, 176, 182, 198, 208, 220, 234, 240, 260, 286, 306, 312, 330, 340, 374, 380, 390, 408, 418, 420, 442, 456, 462, 476, 494, 510, 532, 544, 546, 552, 570, 598, 608, 644, 646, 650, 6...	[ "nonn" ]
A132550	[ 5, 28, 9150, 112068411, 27674288746995176, 7.242727598319781e+33, 2.485200499548659e+68 ]	[ "frac", "nonn" ]
A131485	[ 1, 2, 3, 4, 11, 6, 7, 8, 9, 10, 5, 12, 19, 14, 15, 16, 17, 18, 13, 20, 21, 22, 29, 24, 31, 26, 27, 28, 23, 30, 25, 32, 33, 34, 35, 36, 37, 41, 42, 40, 38, 39, 43, 44, 45, 46, 47, 48, 49, 53, 54, 52, 50, 51, 5...	[ "easy", "nonn" ]
A264724	[ 2, 5, 11, 18, 29, 38, 55, 68, 87, 104, 131, 148, 181, 202, 233, 264, 305, 330, 379, 408, 453, 494, 551, 584, 645, 688, 747, 796, 869, 908, 991, 1040, 1109, 1172, 1249, 1308, 1405, 1462, 1545, 1616, 1721, 1776, 1891, 1956, 2049, ...	[ "nonn", "easy" ]

A006489

[ 11, 13, 17, 23, 37, 47, 53, 67, 73, 103, 107, 157, 173, 233, 257, 263, 277, 353, 373, 563, 593, 607, 613, 647, 653, 733, 947, 977, 1097, 1103, 1123, 1187, 1223, 1283, 1297, 1367, 1433, 1453, 1487, 1493, 1607, 1613, 1663, 1747, 1...

[ "nonn", "nice", "easy" ]

A370118

[ 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0...

[ "nonn" ]

A183053

[ 0, 12, 28, 48, 88, 148, 220, 312, 440, 588, 772, 1000, 1248, 1548, 1908, 2288, 2728, 3244, 3788, 4400, 5096, 5828, 6644, 7552, 8496, 9540, 10692, 11880, 13176, 14596, 16060, 17640, 19352, 21116, 23012, 25048 ]

[ "nonn" ]

A023636

[ 1, 3, 2, 1, 3, 4, 1, 2, 3, 1, 2, 2, 1, 4, 3, 1, 2, 4, 1, 3, 4, 1, 2, 2, 1, 3, 2, 1, 4, 3, 1, 2, 2, 1, 4, 2, 1, 3, 2, 1, 2, 4, 1, 3, 4, 1, 2, 3, 1, 4, 2, 1, 2, 3, 1, 2, 4, 1, 3, 4, 1, 2, 2, 1...

[ "nonn" ]

A270872

[ 13, 2278, 19439, 117910, 550009, 2072078, 6584443, 18269614, 45445445, 103390294, 218437543, 433677158, 816642289, 1469399230, 2541499379, 4246292158, 6881138173, 10852102214, 16703746015, 25154681014, 37139581673, 53858400238, 76833564139, 107975977550 ]

[ "nonn", "easy" ]

A006439

[ 4, 152, 2630, 31500, 303534, 2530976, 19030428, 132386340, 866782510, 5405853200 ]

[ "nonn", "more" ]

A165191

[ 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1...

[ "nonn", "easy", "tabf" ]

A231763

[ 9409, 440896, 30958096, 2217939025, 146247350929, 9934984224361, 682267982467600, 46367367209812220, 3151689997684400600, 214862774587748800000, 1.4634892191955776e+22, 9.961915378992972e+23 ]

[ "nonn" ]

A012524

[ 2, -128, 50432, -63423488, 186761510912, -1077443663495168, 10868880846196048000, -1.767074103219416e+23, 4.359687422323729e+27 ]

[ "sign" ]

A211657

[ 1, 3, 4, 7, 6, 8, 15, 13, 28, 14, 39, 20, 36, 40, 30, 63, 91, 38, 44, 78, 57, 93, 62, 127, 68, 195, 74, 121, 112, 171, 217, 102, 162, 110, 133, 255, 176, 160, 204, 138, 222, 266, 150, 300, 158, 363, 164, 183, 260, 174,...

[ "nonn" ]

A159749

[ 2, 2, 4, 2, 12, 16, 0, 24, 96, 96, -8, 0, 320, 960, 768, 0, -240, 0, 4800, 11520, 7680, 240, 0, -6720, 0, 80640, 161280, 92160, 0, 13440, 0, -188160, 0, 1505280, 2580480, 1290240, -24192, 0, 645120, 0, -5419008, 0, 30965760, 46448...

[ "sign", "tabl" ]

A019503

[ 1, 2, 5, 16, 67, 308, 1493 ]

[ "nonn", "hard", "nice", "more" ]

A056329

[ 0, 0, 0, 0, 1, 9, 76, 542, 3523, 21393, 123680, 690550, 3756151, 20042589, 105394296, 548123982, 2826435403, 14479204833, 73794961960, 374603884910, 1895632969351, 9568915372269, 48208452866816 ]

[ "nonn" ]

A270619

[ 1, 4, 32, 160, 757, 2908, 12468, 50740, 205792, 827900, 3324088, 13294177, 53209272, 212851437, 851490496, 3406377481 ]

[ "nonn", "more" ]

A326115

[ 1, 1, 2, 2, 2, 2, 4, 4, 6, 6, 12, 12, 12, 12, 24, 24, 32, 32, 64, 64, 64, 64, 128, 128, 192, 192, 384, 384, 384, 384, 768, 768, 960, 960, 1920, 1920, 1920, 1920, 3840, 3840, 5760, 5760, 11520, 11520, 11520, 11520, 23040, 2...

[ "nonn" ]

A260137

[ 1880, 8998, 61914, 266156, 1340176, 7839850, 39696994, 200149838, 1081436482, 5672351526, 29202675242, 153702924266, 807944925446, 4206057040818, 22004575402798, 115383468865762, 603019794931990, 3152862366134910 ]

[ "nonn" ]

A365395

[ 1, 1, 1, 2, 1, 3, 2, 4, 1, 5, 3, 6, 2, 7, 4, 2, 1, 8, 5, 9, 3, 10, 6, 3, 2, 11, 7, 7, 4, 12, 2, 4, 1, 13, 8, 14, 5, 15, 9, 5, 3, 16, 10, 11, 6, 17, 3, 6, 2, 18, 11, 10, 7, 19, 7, 7, 4, 17, 12, 20, ...

[ "nonn" ]

A331489

[ 1, 2, 7, 8, 16, 19, 28, 32, 43, 53, 56, 64, 76, 98, 107, 112, 128, 131, 152, 163, 172, 196, 212, 224, 227, 256, 263, 266, 304, 311, 343, 344, 383, 392, 424, 428, 443, 448, 512, 521, 524, 532, 577, 602, 608, 613, 652, 686, ...

[ "nonn" ]

A068203

[ 1, 15, 449, 13455, 403201, 12082575, 362074049, 10850138895, 325142092801, 9743412645135, 291977237261249, 8749573705192335, 262195233918508800, 7857107443850072000, 235451028081583650000, 7.055673735003659e+21, 2.114347610220282e+23 ]

[ "nonn", "easy" ]

A167519

[ 3, 10, 11, 12, 11000, 11111, 11112, 11113, 11114, 11115, 11116, 11117, 11118, 11119, 11121, 11122, 11123, 11124, 11125, 11126, 11127, 11128, 11129, 11131, 11132, 11133, 11134, 11135, 11136, 11137, 11138, 11139, 11141, 11142, 11143, 11144 ]

[ "nonn", "base" ]

A117585

[ 1, 3, 9, 24, 61, 151, 369, 896, 2169, 5243, 12665, 30584, 73845, 178287, 430433, 1039168, 2508785, 6056755, 14622313, 35301400, 85225133, 205751687, 496728529, 1199208768, 2895146089, 6989500971, 16874148057, 40737797112, 98349742309 ]

[ "nonn" ]

A296373

[ 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 6, 5, 3, 1, 1, 9, 12, 6, 3, 1, 1, 18, 21, 14, 6, 3, 1, 1, 30, 45, 27, 15, 6, 3, 1, 1, 56, 84, 61, 29, 15, 6, 3, 1, 1, 99, 170, 120, 67, 30, 15, 6, 3, 1, 1, 186, 323, 254, ...

[ "nonn", "tabl" ]

A368764

[ 1, 2, 9, 42, 203, 1085, 6636, 46662, 373626, 3363129, 33632005, 369953056, 4439438037, 57712696301, 807977750594, 12119666261970, 193914660195396, 3296549223326577, 59337886019884370, 1127419834377810300, 22548396687556215000, 473516330438680600000 ]

[ "nonn" ]

A312957

[ 1, 4, 9, 13, 18, 24, 26, 32, 38, 41, 46, 54, 57, 59, 66, 71, 76, 79, 86, 91, 92, 101, 101, 110, 114, 118, 124, 125, 135, 135, 141, 147, 154, 156, 156, 171, 167, 175, 179, 187, 191, 188, 204, 200, 209, 213, 218, 225, 222,...

[ "nonn" ]

A049849

[ 0, 0, 0, 0, 1, 1, 1, 1, 4, 2, 2, 3, 1, 3, 6, 7, 5, 5, 4, 8, 5, 5, 10, 9, 6, 4, 5, 7, 8, 9, 6, 8, 8, 6, 8, 7, 5, 8, 9, 10, 13, 7, 10, 9, 8, 9, 8, 7, 7, 11, 11, 14, 13, 14, 15, 15, 8, 9, 12, 5, 17, ...

[ "nonn" ]

A167228

[ 0, 1, 1, 4, 6, 7, 11, 16, 16, 26, 29, 30, 42, 47, 48, 64, 72, 70, 89, 104, 90, 119, 131, 124, 162, 170, 158, 190, 210, 202, 239, 256, 232, 290, 308, 286, 342, 359, 332 ]

[ "nonn" ]

A033171

[ 365, 730, 1095, 1461, 1826, 2191, 2556, 2922, 3287, 3652, 4017, 4383, 4748, 5113, 5478, 5844, 6209, 6574, 6939, 7305, 7670, 8035, 8400, 8766, 9131, 9496, 9861, 10227, 10592, 10957, 11322, 11688, 12053, 12418, 12783, 13149, 13514, 13879 ]

[ "easy", "nonn" ]

A063411

[ 0, 0, 0, 5040, 6249600, 15958978560, 138492255928320, 3264016697241108500, 1.6708353497756892e+23, 2.6809984170742143e+28, 1.5381567503446461e+34 ]

[ "nonn" ]

A226944

[ 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, 450, 462, 480, 510, 540, 546, 570, 600, 630, 660, 690, 714, 720, 750, 780, 798, 810, 840, 858, 870, 900, 924, 930, 960, 966, 990, 1020, 1050, 1080, 1092, 1110, ...

[ "nonn" ]

A256244

[ 3, 2, 3, 4, 3, 4, 3, 4, 5, 4, 5, 4, 5, 4, 5, 6, 5, 6, 5, 6, 5, 6, 5, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 6, 7, 8, 7, 8, 7, 8, 7, 8, 7, 8, 7, 8, 7, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 1...

[ "nonn", "easy" ]

A272234

[ 9, 245, 128, 125, 32, 214375, 250, 9, 2057, 2197, 2187, 5021875, 256, 658503, 85184, 6875, 5120, 148046893, 6144, 19683, 327701, 23882769, 2048, 1830125, 729, 3536405, 32, 50653, 19712, 75926359382399, 19683, 81, 2000033, 793071909, 4131, 3130468...

[ "nonn" ]

A242924

[ 1, 2, 4, 8, 12, 66, 24, 34, 233, 251, 284, 173, 104, 299, 329, 431, 596, 625, 528, 1052, 759, 349, 667, 1028, 793, 436, 1242, 1882, 1410, 1374, 4974, 1181, 3626, 3517, 3673, 3148, 4398, 6160, 5537, 4254, 5512, 7039, 4074, 2194, ...

[ "nonn" ]

A317701

[ 1, 272, 5114, 242908, 11013057, 508895558, 23660712291, 1103426578662, 51504728212214, 2405230028991235, 112343236438058700, 5247698593127587000, 245134541408802570000, 1.1451062337945565e+22, 5.349206046691532e+23 ]

[ "nonn" ]

A295541

[ 1, -1, 3, -21, 180, -1728, 17766, -191322, 2130381, -24328755, 283378095, -3353616513, 40209584220, -487400777388, 5963013401400, -73536394960872, 913148848213740, -11408099402698488, 143288658075653380, -1808347110471143400, 22919638640740372000, -291612557490911400000, ...

[ "sign" ]

A201667

[ 3, 1, 0, 5, 7, 9, 1, 2, 2, 9, 3, 6, 3, 0, 8, 2, 2, 7, 7, 9, 2, 8, 9, 6, 7, 9, 3, 1, 6, 1, 4, 3, 1, 4, 3, 0, 3, 5, 9, 5, 3, 6, 9, 7, 6, 5, 5, 5, 2, 9, 1, 7, 0, 3, 3, 2, 2, 8, 1, 2, 7, 8, 5, 1...

[ "nonn", "cons" ]

A115714

[ 1, -1, -3, 0, 1, -5, 1, 0, -3, -1, 1, -4, 1, -1, -3, 0, 1, -5, 1, 0, -3, -1, 1, -4, 1, -1, -3, 0, 1, -5, 1, 0, -3, -1, 1, -4, 1, -1, -3, 0, 1, -5, 1, 0, -3, -1, 1, -4, 1, -1, -3, 0, 1, -5, 1, 0, -3, -1,...

[ "easy", "sign" ]

A082960

[ 1, 0, 1, 1, 0, 0, 1, 0, 1 ]

[ "nonn" ]

A122704

[ 1, 1, 4, 22, 160, 1456, 15904, 202672, 2951680, 48361216, 880405504, 17630351872, 385148108800, 9114999832576, 232311251144704, 6343764407375872, 184778982658539520, 5718564661248066000, 187389427488113560000, 6.481629887083388e+21, 2.3599335102800735e+23 ]

[ "nonn", "easy", "changed" ]

A110930

[ 1, 3, 7, 17, 37, 79, 163, 331, 673, 1361, 2729, 5471, 10949, 21911, 43853, 87719, 175447, 350899, 701819, 1403641, 2807303, 5614657, 11229331, 22458671, 44917381, 89834777, 179669557, 359339171, 718678369, 1437356741, 2874713497 ]

[ "nonn" ]

A273933

[ 60074174160, 71957405520, 75710489400, 96058282320, 96058282320, 97306569360, 96759542880, 94972878000, 109117562400 ]

[ "nonn", "more" ]

A164755

[ 8, 80, 258, 480, 644, 752, 850, 956, 1070, 1184, 1298, 1412, 1526, 1640, 1754, 1868, 1982, 2096, 2210, 2324, 2438, 2552, 2666, 2780, 2894, 3008, 3122, 3236, 3350, 3464, 3578, 3692, 3806, 3920, 4034, 4148, 4262 ]

[ "nonn" ]

A332165

[ 5, 656, 66566, 6665666, 666656666, 66666566666, 6666665666666, 666666656666666, 66666666566666664, 6666666665666666000, 666666666656666600000, 6.666666666656666e+22, 6.666666666665667e+24, 6.666666666666567e+26, 6.666666666666657e+28, 6.666666666666666e+30 ]

[ "nonn", "base", "easy" ]

A127894

[ 1, -3, 1, 12, -6, 1, -55, 33, -9, 1, 273, -182, 63, -12, 1, -1428, 1020, -408, 102, -15, 1, 7752, -5814, 2565, -760, 150, -18, 1, -43263, 33649, -15939, 5313, -1265, 207, -21, 1, 246675, -197340, 98670, -35880, 9750, -1950, 273, -...

[ "sign", "tabl" ]

A151041

[ 1, 3, 9, 33, 129, 511, 2110, 8855, 37630, 162562, 707441, 3105186, 13739266, 61089049, 273188714, 1227301479, 5534051578, 25051273980, 113748350238, 517968113869, 2365096349789, 10823958151853, 49646711304843, 228176908323882, 1050601462096454, 4845768031863803, 2...

[ "nonn", "walk" ]

A074318

[ 4, 50064, 2.084924134437041e+44 ]

[ "nonn", "bref" ]

A256671

[ 1, -1, 2, -1, -1, 1, -1, -1, 7, 5, -2663, -691, 1247, 7, -1511, -3617, 1623817, 43867, -10405289, -174611, 21491081, 854513, -2523785339, -236364091, 1827648887, 8553103, -11254630547, -23749461029, 596303510772251, 8615841276005 ]

[ "sign", "frac" ]

A357227

[ 1, 1, 5, 27, 156, 961, 6145, 40546, 273784, 1883468, 13153544, 93012247, 664640794, 4791939802, 34816034143, 254659426691, 1873698891024, 13858201221637, 102975937795619, 768385165594607, 5755185884844403, 43253819566052170, 326093530416255170, 2465456045342546000 ]

[ "nonn" ]

A045129

[ 85, 277, 325, 337, 340, 342, 345, 357, 405, 597, 1045, 1093, 1105, 1108, 1110, 1113, 1125, 1173, 1285, 1297, 1300, 1302, 1305, 1317, 1345, 1348, 1350, 1353, 1360, 1362, 1368, 1370, 1377, 1380, 1382, 1385, 1413, 1425, 1428 ]

[ "nonn", "base" ]

A161735

[ 17, 73, 113, 131, 229, 409, 443, 617, 673, 739, 953, 1153, 1171, 1889, 2393, 5087, 6217, 6553, 8669, 9433, 9973, 11321, 11897, 13877, 14633, 14737, 15823, 17377, 18539, 19081, 19441, 20393, 20611, 21841, 25469, 26249, 26833, 28649, 29599 ]

[ "nonn" ]

A276137

[ 0, 1, 3, 5, 7, 9, 10, 11, 13, 15, 17, 19, 30, 31, 33, 35, 37, 39, 50, 51, 53, 55, 57, 59, 70, 71, 73, 75, 77, 79, 90, 91, 93, 95, 97, 99, 100, 101, 103, 105, 107, 109, 110, 111, 113, 115, 117, 119, 130, 131, 133, 1...

[ "nonn", "base", "easy" ]

A388484

[ 2, 9, 3, 3, 3, 3, 5, 2, 8, 8, 2, 6, 8, 1, 7, 0, 4, 9, 1, 7, 3, 0, 2, 1, 7, 5, 6, 3, 9, 4, 7, 3, 8, 4, 7, 8, 6, 2, 7, 1, 0, 4, 8, 1, 1, 2, 6, 0, 5, 2, 2, 4, 2, 6, 4, 1, 6, 3, 6, 4, 8, 5, 8, 4...

[ "nonn", "cons" ]

A252264

[ 258, 822, 3016, 10302, 35486, 122506, 420420, 1446744, 4990438, 17183040, 59122262, 203560110, 701041422, 2413836036, 8310468310, 28613117804, 98520290558, 339220390780, 1167963347912, 4021394031518, 13846106821008, 47673737497992, 164145642402238, 565170049989314 ]

[ "nonn" ]

A317115

[ 16, 420, 3398, 37221, 392393, 4237829, 45938893, 497129492, 5387633738, 58350081443, 632133529266, 6847527128492, 74177538970732, 803540864229906, 8704502381388118, 94293146311572130, 1021447666436460300 ]

[ "nonn" ]

A080557

[ 3, 9, 27, 81, 225, 507, 912, 1236, 1587, 1782, 1977, 2046, 2070, 1947, 1680, 1275, 951, 600, 402, 201, 114, 36, 15 ]

[ "nonn", "fini", "full" ]

A200747

[ 0, 1, 2, 2, 3, 1, 2, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 4, 2, 1, 2, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 4, 2, 3, 4, 4, 2, 2, 3, 2, 3, 3, 3, 3, 4, 3, 3, 3, 4, 4, 2, 3, 4, 4, 2, 2...

[ "nonn" ]

A015823

[ 3, 6, 11, 14, 23, 24, 30, 33, 35, 54, 59, 66, 71, 77, 99, 102, 105, 107, 110, 119, 131, 140, 158, 161, 167, 168, 174, 179, 186, 203, 222, 231, 239, 251, 253, 280, 287, 290, 304, 311, 312, 329, 347, 348, 357, 359, 366, 371,...

[ "nonn" ]

A328277

[ 304, 153, 157, 197, 124, 97, 221, 156, 69, 171, 73, 88, 142, 68, 69, 129, 73, 81, 86, 62, 46, 189, 88, 40, 67, 48, 51, 24, 89, 80, 77, 31, 63, 68, 41, 20, 0, 132, 80, 90, 58, 32, 63, 99, 37, 0, 106, 69, 79, 50, 30, ...

[ "nonn", "base", "tabl", "fini" ]

A228846

[ 1, 2, 4, 8, 16, 7, 8, 9, 11, 16, 14, 14 ]

[ "nonn", "hard", "more" ]

A096816

[ 1, 2, 3, 5, 9, 15, 26, 44, 75, 129, 220, 378, 648, 1114, 1910, 3284, 5635, 9677, 16608, 28501, 48930, 83973, 144150, 247396, 424612, 728577, 1250185, 2144858, 3679772, 6313029, 10830673, 18581706, 31880471, 54698330, 93847987, 161021223 ]

[ "nonn" ]

A253665

[ 1, 2, 8, 48, 96, 960, 1280, 17920, 17920, 322560, 258048, 5677056, 3784704, 98402304, 56229888, 1686896640, 843448320, 28677242880, 12745441280, 484326768640, 193730707456, 8136689713152, 2958796259328, 136104627929088, 45368209309696, 2268410465484800 ]

[ "nonn" ]

A246941

[ 1, 9, 90, 819, 7461, 67239, 606051, 5455359, 49106502, 441967518, 3977783082, 35800130448, 322201861893, 2899817511237, 26098363809063, 234885281153616, 2113967586352095, 19025708339182544, 171231375557145820, 1541082380573345300, 13869741429702220000 ]

[ "nonn" ]

A086070

[ 1, 2, 3, 5, 7, 11, 13, 15, 23, 27, 29, 31, 47, 55, 59, 61, 63, 95, 111, 119, 123, 125, 127, 191, 223, 239, 247, 251, 253, 255, 383, 447, 479, 495, 503, 507, 509, 511, 767, 895, 959, 991, 1007, 1015, 1019, 1021, 1023 ]

[ "nonn", "fini", "full" ]

A261681

[ 1, 2, 5, 10, 21, 41, 83, 162, 325, 637, 1275, 2509, 5019, 9907, 19815, 39202, 78405, 155381, 310763, 616665, 1233331, 2449867, 4899735, 9740685, 19481371, 38754731, 77509463, 154276027, 308552055, 614429671, 1228859343, 2448023842, 4896047685, 975673...

[ "nonn" ]

A264128

[ 1, 2, 2, 4, 9, 4, 8, 45, 45, 8, 16, 200, 576, 200, 16, 32, 845, 5733, 5733, 845, 32, 64, 3549, 53361, 108045, 53361, 3549, 64, 128, 14994, 533610, 1995525, 1995525, 533610, 14994, 128, 256, 63525, 5336100, 39592980, 79655625, 39592980...

[ "nonn", "tabl" ]

A324912

[ 1, 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" ]

A195541

[ 5, 12, 44, 51, 280, 949, 103488, 133416, 4142957, 81015132, 141119360, 2339121011, 22104171804, 658972588452, 461228244281, 3140753982224, 7467448353120, 49702513350325, 3912991025369532, 130254818350668560, 177768662787348700000 ]

[ "nonn" ]

A370001

[ 2, 3, 5, 8, 13, 23, 41, 77, 152 ]

[ "nonn", "more" ]

A085397

[ 2, 3, 6, 7, 10, 11, 12, 14, 15, 18, 19, 22, 23, 24, 26, 28, 30, 31, 34, 35, 38, 39, 40, 42, 43, 44, 46, 47, 48, 50, 51, 54, 55, 56, 58, 59, 60, 62, 63, 66, 67, 70, 71, 72, 74, 75, 76, 78, 79, 82, 83, 86, 87, 88...

[ "nonn", "easy" ]

A330755

[ 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 1, 2, 1, 4, 3, 1, 1, 5, 1, 2, 4, 6, 1, 5, 1, 7, 1, 3, 1, 8, 1, 1, 6, 9, 2, 4, 1, 10, 7, 3, 1, 11, 1, 5, 4, 12, 1, 8, 1, 13, 9, 6, 1, 14, 5, 2, 10, 15, 1, 11, 1, 16,...

[ "nonn" ]

A057134

[ 4, 128, 716353536, 1.4178431955039404e+37, 1.1173173274952164e+152 ]

[ "nonn" ]

A099121

[ 1, 3, 21, 220, 3060, 53130, 1107568, 26978328, 752538150, 23667689815, 828931106355, 32006008361808, 1350990969850340, 61902409203193230, 3060335715568296000, 162392216278033630000, 9.206887338937201e+21 ]

[ "nonn" ]

A089173

[ 2, 2, 4, 3, 6, 3, 5, 4, 4, 10, 9, 6, 14, 5, 11, 16, 6, 5, 8, 20, 15, 7, 24, 8, 26, 12, 19, 7, 8, 10 ]

[ "easy", "nonn" ]

A160981

[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 3, 3, 3, 5, 4, 5, 6, 6, 6, 8, 7, 10, 10, 10, 11, 14, 12, 14, 15, 16, 16, 18, 20, 21, 22, 22, 24, 28, ...

[ "nonn" ]

A003665

[ 1, 1, 10, 28, 136, 496, 2080, 8128, 32896, 130816, 524800, 2096128, 8390656, 33550336, 134225920, 536854528, 2147516416, 8589869056, 34359869440, 137438691328, 549756338176, 2199022206976, 8796095119360, 35184367894528, 140737496743936, 562949936644096, 2251799847...

[ "nonn", "easy" ]

A289882

[ 1, 3, 5, 15, 27, 63, 71, 255, 303, 1023, 1439, 4095, 4415, 16383, 21631, 65535, 71423, 262143, 379391, 1048575, 1733631, 4194303, 6064127, 16777215, 16961535, 67108863, 100147199, 268435455, 309805055, 1073741823, 1579712511, 4294967295, 7290159103 ]

[ "nonn", "easy" ]

A096890

[ 401408, 414050, 436032, 455625, 462400, 466608, 476100, 486300, 486900, 512337, 522242, 526974, 543600, 544644, 544944, 546192, 546861, 554304, 559504, 571536, 572313, 575028, 577200, 579856, 583200, 585528, 599694, 604300, 609429, 611618 ]

[ "nonn" ]

A242038

[ 0, 1, 1448, 102275, 2097152, 21836601, 148111277, 747359260, 3037000499, 10460353203, 31622776601, 86024705429, 214488041413, 497055861119, 1082291816449, 2233357359474, 4398046511104, 8312155792152, 15148209527700, 26724698233906 ]

[ "nonn" ]

A241525

[ 19, 17, 13, 521, 509, 503, 499, 491, 14153, 25793, 25771, 37663, 37657, 98729, 98717, 98713, 98711, 98689, 98669, 98663, 98641, 98639, 98627, 98621, 98597, 98573, 69794393, 69794383, 268684679, 268684651, 268684627, 329788829, 545497787, 545497769, ...

[ "nonn", "base" ]

A223567

[ 64, 4096, 153664, 4174016, 97140736, 2137096192, 47016116224, 1034354556928, 22755800252416, 500627605553152, 11013807322169344, 242303761087725570, 5330682743929962000, 117275020366459170000, 2.580050448062102e+21 ]

[ "nonn" ]

A061401

[ 1, 6, 9, 56, -300, 3942, -48412, 639264, -8785098, 124733000, -1817441901, 27047510136, -409669978497, 6297861697848, -98055605511675, 1543575781461888, -24533312413314948, 393242952308487600, -6350814254230702000 ]

[ "sign" ]

A156774

[ 485, 3482, 19601, 48842, 91205, 146690, 215297, 297026, 391877, 499850, 620945, 755162, 902501, 1062962, 1236545, 1423250, 1623077, 1836026, 2062097, 2301290, 2553605, 2819042, 3097601, 3389282, 3694085, 4012010, 4343057, 4687226 ]

[ "nonn", "easy" ]

A053885

[ 1, 121, 2217121, 21127711127121, 1.7177711172112177e+25, 1.711777221721122e+34 ]

[ "nonn", "base", "more" ]

A106936

[ 3, 7, 23, 71, 79, 131, 139, 227, 283, 347, 379, 419, 479, 487, 499, 503, 571, 607, 619, 683, 691, 719, 743, 823, 827, 839, 947, 991, 1031, 1051, 1091, 1151, 1163, 1231, 1303, 1319, 1439, 1451, 1459, 1499, 1559, 1567, 1627, 1723, ...

[ "nonn", "easy" ]

A370276

[ 1, 4, 16, 72, 352, 1816, 9728, 53584, 301568, 1726488, 10022912, 58864240, 349102080, 2087772784, 12576358400, 76237953440, 464736354304, 2847019090712, 17518413479936, 108224749140784, 670996707147776, 4173817417204944, 26040046909915136, 162905940337309800, 10217004...

[ "nonn" ]

A215960

[ 2186, 75938, 745418, 3959426, 14704202, 43261346, 108110858, 239479298, 483533066, 907216802, 1603736906, 2698690178, 4356837578, 6789523106, 10262737802, 15105828866, 21720853898, 30592580258, 42299129546, 57523267202, 77064337226, 101850842018 ]

[ "nonn", "easy" ]

A348636

[ 1, 3, 8, 22, 24, 65, 70, 72, 194, 208, 210, 215, 580, 582, 623, 628, 630, 644, 1738, 1740, 1745, 1867, 1869, 1883, 1888, 1890, 1931, 5212, 5214, 5219, 5233, 5235, 5600, 5605, 5607, 5648, 5662, 5664, 5669, 5791, 5793, 15635, 15640, ...

[ "nonn" ]

A140217

[ 1, 1, 2, 9, 34, 730, 4376, 905345, 10601986, 10009765626, 200097656252, 2177748514672962, 85812416258106780, 4.1427890429801293e+21, 2.8990440321251796e+23, 1.7551903394046053e+29 ]

[ "nonn" ]

A304443

[ 1, 2, 10, 62, 394, 2562, 16966, 113794, 770442, 5254334, 36042250, 248403586, 1718732998, 11931569028, 83064794746, 579696375972, 4054279504266, 28408328186508, 199390547044342, 1401564307833908, 9865190079554954, 69522550703432480, 490484539061916800 ]

[ "nonn" ]

A221720

[ 1, 1, 2, 5, 12, 26, 49, 83, 129, 187, 257, 339, 433, 539, 657, 787, 929, 1083, 1249, 1427, 1617, 1819, 2033, 2259, 2497, 2747, 3009, 3283, 3569, 3867, 4177, 4499, 4833, 5179, 5537, 5907, 6289, 6683, 7089, 7507, 7937, 8379, 8833, 9...

[ "nonn", "easy" ]

A283833

[ 1, 1, 1, 3, 3, 3, 2, 1, 7, 7, 7, 6, 5, 4, 3, 2, 1, 15, 15, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 31, 31, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, ...

[ "nonn" ]

A109266

[ 1, -1, 0, -2, 1, -2, 3, -3, 5, -6, 8, -11, 14, -19, 25, -33, 44, -58, 77, -102, 135, -179, 237, -314, 416, -551, 730, -967, 1281, -1697, 2248, -2978, 3945, -5226, 6923, -9171, 12149, -16094, 21320, -28243, 37414, -49563, 65657, -8...

[ "easy", "sign" ]

A033057

[ 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 42, 43, 44, 45, 46, 47, 54, 55, 56, 57, 58, 59, 66, 67, 68, 69, 70, 71, 78, 79, 80, 81, 82, 83, 90, 91, 92, 93, 94, 95, 102, 103, 104, 10...

[ "nonn", "base" ]

A111970

[ 3, 4, 3, 7, 7, 1, 4, 5, 3, 0, 2, 5, 6, 7, 2, 7, 5, 3, 6, 6, 9, 1, 6, 7, 9, 2, 4, 4, 2, 9, 0, 5, 5, 6, 0, 0, 9, 9, 5, 2, 3, 6, 5, 1, 9, 3, 2, 9, 5, 6, 8, 5, 9, 7, 8, 5, 8, 5, 6, 4, 0, 5, 2, 5...

[ "nonn", "cons" ]

A204584

[ 100, 104, 108, 112, 117, 122, 127, 132, 137, 142, 148, 154, 160, 167, 173, 180, 187, 195, 203, 211, 219, 228, 237, 246, 256, 267, 277, 288, 300, 312, 324, 337, 351, 365, 379, 395, 410, 427, 444, 462, 480, 499, 519, 540, 562, 5...

[ "nonn", "easy" ]

A337969

[ 1, 4, 30, 756, 59778, 14407956, 10474702110, 22887252808164, 150117512089454080, 2.9544628011861305e+21, 1.7445216532182673e+26, 3.090332883184362e+31, 1.6423234171415042e+37, 2.6183907127466404e+43 ]

[ "nonn" ]

A285525

[ 13, 38, 63, 85, 110, 135, 160, 185, 210, 232, 257, 282, 307, 332, 354, 379, 404, 429, 454, 479, 501, 526, 551, 576, 601, 626, 648, 673, 698, 723, 748, 770, 795, 820, 845, 870, 895, 917, 942, 967, 992, 1017, 1042, 1064, 1089, 1...

[ "nonn" ]

A024364

[ 12, 30, 40, 56, 70, 84, 90, 126, 132, 144, 154, 176, 182, 198, 208, 220, 234, 240, 260, 286, 306, 312, 330, 340, 374, 380, 390, 408, 418, 420, 442, 456, 462, 476, 494, 510, 532, 544, 546, 552, 570, 598, 608, 644, 646, 650, 6...

[ "nonn" ]

A132550

[ 5, 28, 9150, 112068411, 27674288746995176, 7.242727598319781e+33, 2.485200499548659e+68 ]

[ "frac", "nonn" ]

A131485

[ 1, 2, 3, 4, 11, 6, 7, 8, 9, 10, 5, 12, 19, 14, 15, 16, 17, 18, 13, 20, 21, 22, 29, 24, 31, 26, 27, 28, 23, 30, 25, 32, 33, 34, 35, 36, 37, 41, 42, 40, 38, 39, 43, 44, 45, 46, 47, 48, 49, 53, 54, 52, 50, 51, 5...

[ "easy", "nonn" ]

A264724

[ 2, 5, 11, 18, 29, 38, 55, 68, 87, 104, 131, 148, 181, 202, 233, 264, 305, 330, 379, 408, 453, 494, 551, 584, 645, 688, 747, 796, 869, 908, 991, 1040, 1109, 1172, 1249, 1308, 1405, 1462, 1545, 1616, 1721, 1776, 1891, 1956, 2049, ...

[ "nonn", "easy" ]