id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A164318
[ 13, 19, 31, 37, 41, 43, 61, 67, 71, 73, 79, 89, 97, 101, 103, 109, 113, 127, 139, 151, 157, 163, 181, 193, 197, 199, 211, 223, 229, 241, 271, 277, 281, 283, 307, 313, 331, 337, 349, 353, 367, 373, 379, 397, 401, 409, 421, ...
[ "nonn" ]
A262531
[ 1300031, 10130003101, 171013000310171, 91710130003101710, 3917101300031017000, 1.6391710130003102e+22, 1.0116391710130002e+28, 1.91011639171013e+32, 9.191011639171013e+34, 1.1919101163917101e+38 ]
[ "nonn", "base", "easy" ]
A279527
[ 0, 0, 0, 2, 4, 2, 4, 46, 46, 4, 14, 384, 1168, 384, 14, 40, 2894, 23610, 23610, 2894, 40, 120, 20444, 456846, 1280440, 456846, 20444, 120, 352, 138944, 8451524, 66239560, 66239560, 8451524, 138944, 352, 1032, 918744, 152161078, 3300066400...
[ "nonn", "tabl" ]
A067138
[ 0, 0, 0, 0, 1, 0, 0, 2, 2, 0, 0, 3, 4, 3, 0, 0, 4, 6, 6, 4, 0, 0, 5, 8, 7, 8, 5, 0, 0, 6, 10, 12, 12, 10, 6, 0, 0, 7, 12, 15, 16, 15, 12, 7, 0, 0, 8, 14, 14, 20, 20, 14, 14, 8, 0, 0, 9, 16, 15, 24, ...
[ "nonn", "tabl", "look" ]
A244595
[ 2, 3, 5, 7, 53, 149, 281, 373, 641, 643, 647, 821, 823, 919, 1049, 1091, 1093, 1097, 1319, 1361, 1367, 1409, 1543, 1637, 1811, 1861, 1907, 2081, 2083, 2087, 2089, 2129, 2179, 2309, 2357, 4153, 4241, 4243, 4421, 4423, 5009, 5233, 523...
[ "nonn", "base" ]
A147401
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 9, 17, 35, 101, 227, 539, 1279, 5573, 17447, 78819, 285189, 1548177, 6812379, 38874621, 188648393, 1338014585 ]
[ "nonn" ]
A114763
[ 4, 484, 49729, 4999696, 499969600, 49999643236, 4999995628489, 499999965341041, 49999999664599210, 4999999997764872000, 499999999955372700000, 4.9999999999562194e+22, 4.999999999996468e+24, 4.999999999999599e+26, 4.9999999999999565e+28 ]
[ "nonn" ]
A078143
[ 8870024, 33908368, 49250144, 69147868, 70918820, 111500620, 112931372, 164786748, 167854344, 200997948, 203356712, 207543320, 211014920, 216785256, 221167422, 221167423, 221167424, 236645624, 240574368, 262315467, 262315468 ]
[ "nonn" ]
A157213
[ 97, 137, 277, 305, 685, 1565, 1733, 3973, 9113, 10093, 23153, 53113, 58825, 134945, 309565, 342857, 786517, 1804277, 1998317, 4584157, 10516097, 11647045, 26718425, 61292305, 67883953, 155726393, 357237733, 395656673, 907639933 ]
[ "nonn", "easy" ]
A137703
[ 991, 2143, 3331, 4591, 4663, 5563, 5653, 8623, 9181, 9343, 9631, 12781, 13033, 13411, 14851, 15643, 16183, 16363, 20161, 20521, 20593, 23311, 24373, 25471, 26641, 27073, 28711, 30133, 30763, 32401, 32491, 34381, 35803, 37783, 38431, 38611, 3904...
[ "nonn", "easy" ]
A304825
[ 1, 1, 3, 4, 9, 12, 22, 30, 50, 68, 105, 142, 210, 281, 400, 531, 736, 967, 1311, 1707, 2274, 2935, 3851, 4930, 6389, 8116, 10402, 13121, 16658, 20872, 26275, 32719, 40880, 50613, 62807, 77343, 95389, 116874, 143331, 174789, 213251, 25...
[ "nonn" ]
A133875
[ 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3...
[ "nonn", "easy", "less" ]
A012138
[ 1, -1, -11, -349, -22455, -2465241, -416217603, -100729124469, -33198564667887, -14328891118054448, -7852649782447650000, -5.329635152693663e+21, -4.388960085492356e+24 ]
[ "sign" ]
A297032
[ 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 1, 2...
[ "nonn", "easy", "base" ]
A001301
[ 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 11, 12, 15, 16, 19, 22, 25, 28, 31, 34, 40, 43, 49, 52, 58, 65, 71, 78, 84, 91, 102, 109, 120, 127, 138, 151, 162, 175, 186, 199, 217, 230, 248, 261, 279, 300, 318, 339, 357, 378, 406, ...
[ "nonn" ]
A306807
[ 1, 2, 3, 1, 5, 2, 6, 3, 1, 7, 5, 2, 8, 6, 3, 1, 9, 7, 5, 2, 10, 8, 6, 3, 1, 11, 9, 7, 5, 2, 12, 10, 8, 6, 3, 1, 13, 11, 9, 7, 5, 2, 14, 12, 10, 8, 6, 3, 1, 15, 13, 11, 9, 7, 5, 2, 16, 14, 12, 10, ...
[ "base", "nonn", "look" ]
A332746
[ 1, 1, 2, 3, 5, 7, 11, 15, 22, 30, 42, 56, 77, 101, 134, 174, 227, 291, 373, 473, 598, 748, 936, 1163, 1437, 1771, 2170, 2651, 3226, 3916, 4727, 5702, 6846, 8205, 9793, 11681, 13866, 16462, 19452, 22976, 27041, 31820, 37276, 43693,...
[ "nonn" ]
A246226
[ 2340699, 0, 0, 0, 0, 0, 264152543774143520, 12327936260780536, 0, 0, 0, 0, 6.728733804472054e+23, 0, 3.408249195950502e+23, 0, 5.490319613423482e+27, 0, 1.0557477888680232e+25, 4.456794105906448e+31, 2.171123633037284e+31 ]
[ "nonn" ]
A332305
[ 1, 0, 0, 2, 2, 4, 4, 6, 6, 8, 32, 34, 58, 84, 132, 158, 230, 280, 376, 450, 570, 1388, 1556, 2398, 3310, 4920, 6600, 9674, 12122, 16684, 21340, 28110, 34974, 45392, 55208, 69274, 124498, 143676, 204012, 270758, 377966, 493024, 69030...
[ "nonn" ]
A110881
[ 1, 2, 4, 28, 58 ]
[ "more", "nonn" ]
A275082
[ 12, 18, 30, 42, 56, 66, 78, 102, 114, 138, 174, 186, 196, 222, 246, 258, 282, 308, 318, 354, 364, 366, 402, 426, 438, 474, 476, 498, 532, 534, 582, 606, 618, 642, 644, 654, 678, 762, 786, 812, 822, 834, 868, 894, 906, 942, 9...
[ "nonn" ]
A314701
[ 1, 5, 9, 13, 18, 20, 26, 31, 35, 45, 46, 51, 58, 56, 66, 70, 75, 83, 85, 91, 96, 98, 107, 113, 113, 122, 124, 123, 136, 134, 144, 151, 150, 162, 162, 165, 177, 177, 182, 190, 189, 194, 202, 201, 214, 215, 219, 230, 227, ...
[ "nonn" ]
A026832
[ 0, 1, 0, 2, 1, 2, 2, 4, 4, 5, 6, 8, 10, 12, 14, 18, 21, 24, 30, 36, 42, 50, 58, 68, 80, 93, 108, 126, 146, 168, 194, 224, 256, 294, 336, 384, 439, 500, 568, 646, 732, 828, 938, 1060, 1194, 1348, 1516, 1704, 1916, 2149,...
[ "nonn", "nice" ]
A260843
[ 1, 5, 2225, 12084475625, 3.2581491237239155e+26, 2.2627975598881775e+65 ]
[ "nonn", "easy" ]
A255291
[ 1, 5, 4, 5, 25, 12, 4, 20, 69, 5, 25, 20, 25, 125, 52, 12, 60, 281, 4, 20, 97, 20, 100, 353, 69, 345, 448, 5, 25, 20, 25, 125, 60, 20, 100, 345, 25, 125, 100, 125, 625, 252, 52, 260, 1341, 12, 60, 381, 60, 300, 1413,...
[ "nonn" ]
A263335
[ 7, 19, 57, 409, 2047, 10747, 70423, 427507, 2610075, 16811257, 106973797, 685280521, 4472908837, 29110775719, 191077482297, 1268190506821, 8394627812935, 56013012538219, 376887163063705, 2528646896288971 ]
[ "nonn" ]
A266871
[ 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 2, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 5, 1, 1, 1, 2, 1, 1...
[ "nonn" ]
A013231
[ 1, 0, 0, 0, 3, -10, 100, -525, 5565, -40500, 490950, -4581775, 63536275, -723857550, 11365224000, -152882218125, 2687668517625, -41677719265000, 812130983706250, -14259432279850876, 305288364810999360 ]
[ "sign" ]
A059984
[ 0, 0, 1, 0, 1, 1, 0, 0, 2, 0, 1, 1, 1, 0, 0, 2, 1, 0, 1, 0, 2, 0, 0, 1, 2, 0, 0, 0, 3, 0, 1, 1, 1, 1, 0, 0, 2, 1, 1, 0, 1, 0, 2, 1, 0, 0, 1, 2, 1, 0, 0, 0, 3, 1, 0, 1, 1, 0, 2, 0, 0, 2, 0, 2...
[ "nonn" ]
A271517
[ 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 0, 12, 1440, 0, 0, 0, 12, 2961, 207360, 0, 0, 0, 12, 3192, 948561, 46448640, 0, 0, 0, 12, 3195, 1460310, 526617762, 17836277760, 0, 0, 0, 12, 3195, 1563960, 1400351232, 562292792592, 1232843518771...
[ "nonn", "tabl" ]
A270610
[ 0, 0, 443088, 46957788, 1008327378, 25162747992, 271906503420, 2992465755612, 20367499465482, 129329174634672, 624840436639956, 2766099092355012, 10373656913823810, 35810603737855596, 111074891756040530 ]
[ "nonn" ]
A151120
[ 1, 3, 11, 45, 193, 856, 3887, 17918, 83588, 393363, 1864001, 8881668, 42512504, 204252658, 984469664, 4757879335, 23048473921, 111881018651, 544062911646, 2649905710426, 12924851464857, 63120555634816, 308611448436444, 1510436638380017, 7399491447414110, 36280635687...
[ "nonn", "walk" ]
A165051
[ 0, 0, 0, 0, 0, 0, 5, 0, 5, 10, 15, 20, 10, 5, 0, 5, 10, 15, 15, 10, 5, 0, 5, 10, 20, 15, 10, 5, 0, 5, 25, 20, 15, 10, 5, 0, 35, 35, 70, 105, 140, 175, 35, 0, 35, 70, 105, 140, 70, 35, 35, 70, 105, 140, 105, ...
[ "base", "nonn" ]
A160681
[ 59, 179, 2579, 655379, 42949672979, 184467440737095500000, 3.4028236692093846e+39 ]
[ "nonn", "hard" ]
A310511
[ 1, 4, 10, 16, 21, 26, 31, 36, 41, 46, 52, 58, 62, 66, 72, 78, 83, 88, 93, 98, 103, 108, 114, 120, 124, 128, 134, 140, 145, 150, 155, 160, 165, 170, 176, 182, 186, 190, 196, 202, 207, 212, 217, 222, 227, 232, 238, 244, 24...
[ "nonn" ]
A324306
[ 1, 2, 14, 464, 62498, 32904512, 68218246274, 561509337384704, 18430991691638470000, 2.4171877071392912e+24, 1.2675418051356444e+30, 2.6583862724822887e+36, 2.2300569741768577e+43, 7.48287098859336e+50, 1.0043355967195004e+59 ]
[ "nonn" ]
A080111
[ 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0...
[ "nonn" ]
A107127
[ 0, 3, 33, 311, 2933, 22235, 39165, 41585 ]
[ "nonn", "more", "base" ]
A211477
[ 8, 18, 40, 82, 168, 332, 658, 1282, 2506, 4860, 9454, 18332, 35644, 69254, 134882, 262834, 513264, 1003378, 1965216, 3853972, 7570530, 14890218, 29329178, 57838732, 114202070, 225732564, 446654196, 884613318, 1753564890, 3478856050 ]
[ "nonn" ]
A256307
[ 1, 2, 3, 4, 5, 6, 0, 21, 22, 23, 24, 25, 26, 20, 31, 32, 33, 34, 35, 36, 30, 41, 42, 43, 44, 45, 46, 40, 51, 52, 53, 54, 55, 56, 50, 61, 62, 63, 64, 65, 66, 60, 1, 2, 3, 4, 5, 6, 0, 211, 212, 213, 214, 215, 2...
[ "nonn", "base", "easy" ]
A366365
[ 1, 2, -4, 32, -240, 2064, -18816, 179264, -1762816, 17758976, -182342400, 1901196288, -20075427840, 214246524928, -2307200135168, 25039992254464, -273603550461952, 3007387399258112, -33230774508716030, 368915340555517950, -4112806343370539000 ]
[ "sign" ]
A100710
[ 2, 5, 4, 11, 6, 9, 8, 23, 10, 13, 12, 19, 14, 17, 16, 47, 18, 21, 20, 27, 22, 25, 24, 39, 26, 29, 28, 35, 30, 33, 32, 95, 34, 37, 36, 43, 38, 41, 40, 55, 42, 45, 44, 51, 46, 49, 48, 79, 50, 53, 52, 59, 54, 57, ...
[ "easy", "nonn" ]
A217908
[ 1296, 4096, 6561, 10000, 38416, 50625, 194481, 234256, 262144, 390625, 456976, 531441, 1000000, 1048576, 1185921, 1336336, 1500625, 2085136, 2313441, 4477456, 5764801, 6765201, 7529536, 9150625, 10077696, 10556001, 11316496, 11390625, 14776336, 17850625 ]
[ "nonn" ]
A208151
[ 2, 2, 3, 7, 3, 5, 1, 9, 4, 3, 1, 3, 7, 6, 0, 1, 2, 2, 4, 5, 9, 6, 8, 4, 1, 0, 9, 6, 7, 8, 4, 8, 9, 8, 0, 6, 6, 2, 2, 8, 8, 5, 1, 8, 8, 6, 9, 3, 8, 8, 8, 2, 5, 5, 5, 3, 8, 2, 4, 9, 9, 1, 8, 3...
[ "cons", "easy", "nonn" ]
A132795
[ 1, 1, 0, 1, 0, 1, 1, 0, 5, 0, 1, 0, 16, 6, 1, 1, 0, 42, 56, 21, 0, 1, 0, 99, 316, 267, 36, 1, 1, 0, 219, 1408, 2367, 960, 85, 0, 1, 0, 466, 5482, 16578, 14212, 3418, 162, 1, 1, 0, 968, 19624, 99330, 153824, 77440, ...
[ "nonn", "easy", "tabl" ]
A261137
[ 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 3, 4, 0, 0, 0, 5, 10, 11, 0, 0, 1, 11, 31, 40, 41, 0, 0, 0, 21, 91, 147, 161, 162, 0, 0, 1, 43, 274, 568, 694, 714, 715, 0, 0, 0, 85, 820, 2227, 3151, 3397, 3424, 3425, ...
[ "nonn", "tabl" ]
A351640
[ 1, 0, 1, 0, 1, 2, 0, 1, 4, 6, 0, 1, 10, 18, 24, 0, 1, 16, 72, 96, 120, 0, 1, 34, 168, 528, 600, 720, 0, 1, 52, 486, 1632, 4200, 4320, 5040, 0, 1, 90, 1062, 6024, 16200, 36720, 35280, 40320, 0, 1, 152, 2460, 16896, 73...
[ "nonn", "tabl" ]
A047135
[ 1, 4, 14, 48, 151, 496, 1679, 4892, 16099, 55566, 126070, 437604, 1610354, 10586223, 37753710, 142615460, 545804530, 2501659594, 9822392246, 38387432220, 149904480000, 622664257407, 2483093527816, 9821396841402 ]
[ "nonn" ]
A371865
[ 623456789, 1234567891, 2234567891, 2234567893, 2234567897, 3234567893, 7234567891, 12345678923, 12345678929, 12345678949, 22345678907, 22345678913, 22345678933, 22345678963, 22345678967, 22345678981, 32345678929, 32345678933, 32345678951, 32345678957, 42345678901, 423456789...
[ "nonn", "base", "look" ]
A296429
[ 1, 0, 2, 4, 2, 8, 9, 3, 9, 1, 0, 1, 2, 1, 3, 0, 3, 6, 7, 9, 8, 3, 4, 8, 7, 2, 4, 7, 4, 6, 0, 2, 4, 3, 8, 2, 2, 5, 2, 4, 6, 5, 0, 8, 6, 4, 0, 9, 5, 2, 2, 0, 7, 1, 6, 7, 7, 6, 2, 4, 8, 6, 4, 6...
[ "nonn", "easy", "cons" ]
A001619
[ 1, 3, 11, 13, 17, 21, 23, 73, 101, 103, 111, 113, 117, 121, 123, 173, 323, 373, 1103, 1111, 1113, 1117, 1121, 1123, 1173, 1323, 1373, 3323, 3373, 11373, 13323, 13373, 17373, 21373, 23323, 23373, 73373, 101173, 101323, 101373, 103323, ...
[ "word", "nonn" ]
A158705
[ 1, 3, 4, 6, 9, 11, 12, 14, 16, 18, 21, 23, 24, 26, 29, 31, 33, 35, 36, 38, 41, 43, 44, 46, 48, 50, 53, 55, 56, 58, 61, 63, 64, 66, 69, 71, 72, 74, 77, 79, 81, 83, 84, 86, 89, 91, 92, 94, 96, 98, 101, 103, 104, ...
[ "nonn", "base" ]
A048455
[ 530, 994, 1662, 2156, 2970, 3598, 4491, 5335, 6231, 7278, 8178, 9308, 10290, 11382, 12502, 13530, 14738, 15768, 16960, 18082, 19228, 20462, 21608, 22870, 24050, 25238, 26522, 27600, 29148, 30120, 32004, 32880, 34930, 35772, 37724, 38646 ]
[ "nonn" ]
A118946
[ 2, 4, 7, 0, 4, 9, 5, 2, 1, 1, 4, 9, 6, 8, 4, 4, 1, 6, 9, 3, 0, 2, 2, 4, 3, 4, 3, 8, 8, 3, 8, 8, 1, 2, 6, 8, 5, 6, 8, 7, 7, 4, 7, 7, 2, 7, 4, 7, 6, 4, 5, 6, 5, 6, 8, 7, 5, 2, 2, 5, 0, 4, 5, 2...
[ "base", "nonn" ]
A233763
[ 0, 1, 2, 2, 4, 2, 4, 5, 8, 2, 4, 6, 12, 6, 8, 11, 16, 2, 4, 6, 12, 14, 16, 18, 24, 10, 8, 14, 28, 14, 16, 23, 32, 2, 4, 6, 12, 14, 16, 20, 32, 24, 20, 22, 40, 30, 40, 39, 48, 18, 8 ]
[ "nonn", "tabf", "more" ]
A376288
[ 1, 5, 9, 21, 25, 23, 3, 39, 7, 69, 19, 11, 15, 13, 35, 27, 31, 29, 33, 93, 49, 71, 45, 87, 55, 213, 67, 63, 75, 115, 57, 43, 65, 51, 145, 77, 37, 81, 59, 85, 99, 207, 17, 91, 123, 107, 95, 101, 119, 121, 105, 113, ...
[ "nonn" ]
A129530
[ 0, 0, 3, 27, 162, 810, 3645, 15309, 61236, 236196, 885735, 3247695, 11691702, 41452398, 145083393, 502211745, 1721868840, 5854354056, 19758444939, 66248903619, 220829678730, 732224724210, 2416341589893, 7939408081077 ]
[ "nonn", "easy" ]
A341284
[ 7, 23, 37, 41, 89, 59, 73, 151, 157, 43, 127, 131, 239, 59, 419, 307, 73, 359, 367, 401, 419, 1163, 881, 307, 311, 967, 547, 569, 3697, 397, 691, 419, 457, 757, 163, 821, 839, 179, 1259, 907, 2111, 967, 1777, 599, 223, 3803, ...
[ "nonn", "look" ]
A179579
[ 37, 73, 142, 276, 539, 1059, 2092, 4150, 8257, 16461, 32858, 65640, 131191, 262279, 524440, 1048746, 2097341, 4194513, 8388838, 16777468, 33554707, 67109163, 134218052, 268435806, 536871289, 1073742229, 2147484082, 4294967760 ]
[ "nonn" ]
A180479
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 20, 24, 30, 32, 36, 40, 48, 50, 60, 64, 70, 80, 90, 96, 110, 112, 132, 170, 184, 220, 224, 225, 252, 264, 275, 312, 330, 336, 340, 342, 396, 414, 418, 440, 441, 448, 510, 550, 6...
[ "base", "easy", "nonn" ]
A259692
[ 0, 1, 51, 472, 2963, 10764, 36538, 95936, 222561, 502638, 974245, 1850784, 3234269, 5826680, 8857926, 15093248, 21945012, 35369541, 48358119, 74448464, 98697648, 148971972, 187495262, 276509952, 336495665, 488970662, 590163894, 823791168, 966018241, 13584047...
[ "nonn" ]
A297898
[ 1, 3, 1, 13, 4, 1, 63, 19, 5, 1, 321, 96, 26, 6, 1, 1683, 501, 138, 34, 7, 1, 8989, 2668, 743, 190, 43, 8, 1, 48639, 14407, 4043, 1059, 253, 53, 9, 1, 265729, 78592, 22180, 5908, 1462, 328, 64, 10, 1, 1462563, 432073, 1224...
[ "nonn", "tabl" ]
A325759
[ 0, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 2, 1, 3, 3, 2, 1, 2, 1, 3, 3, 3, 1, 3, 2, 3, 2, 3, 1, 3, 1, 2, 3, 3, 4, 2, 1, 3, 3, 3, 1, 4, 1, 3, 3, 3, 1, 3, 2, 3, 3, 3, 1, 3, 4, 4, 3, 3, 1, 3, 1, 3, 3, 2...
[ "nonn" ]
A234669
[ 29568, 217968, 1604020, 11826092, 87273500, 644848264, 4769561472, 35319420856, 261811840168, 1942988877232, 14433959951680, 107349012026192, 799169229326556, 5956201429623128, 44434739229424040, 331862990142839740 ]
[ "nonn" ]
A312768
[ 1, 4, 8, 16, 18, 22, 26, 34, 38, 44, 42, 52, 54, 66, 64, 68, 70, 82, 84, 94, 84, 100, 100, 112, 114, 110, 120, 126, 132, 140, 130, 146, 148, 158, 160, 156, 166, 176, 176, 188, 172, 196, 194, 206, 206, 198, 216, 222, 226,...
[ "nonn" ]
A267637
[ 1, 8, 51, 1015, 8917, 343145, 3696933, 330654951, 4301737251, 1093232460925 ]
[ "nonn" ]
A134925
[ 0, 1, 2, 5, 8, 12, 16, 21, 26, 31, 37, 43, 49, 56, 63, 70, 77, 85, 93, 102, 110, 119, 128, 137, 147, 156, 166, 177, 187, 198, 209, 220, 231, 242, 254, 266, 278, 290, 303, 315, 328, 341, 354, 367, 381, 395, 409, 423, 437,...
[ "nonn" ]
A014808
[ 1, 1, 1, 1, 1, 1, 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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,...
[ "sign" ]
A360980
[ 1, 2, 21, 4, 25, 42, 7, 8, 81, 50, 11, 84, 13, 14, 285, 16, 289, 162, 19, 100, 21, 22, 69, 168, 25, 26, 81, 28, 87, 570, 31, 32, 1089, 578, 35, 324, 37, 38, 117, 200, 41, 42, 301, 44, 405, 138, 47, 336, 49, 50, 357, ...
[ "nonn", "base", "look" ]
A278872
[ 1, 1, 1, 15, 4, 55, 0, 247, 0, 1021, 17, 4095, 80, 16215, 80, 65503, 260, 261503, 276, 1047895, 336, 4193621, 341, 16774485, 1365, 67108181, 4437, 268432725, 17749, 1073700181, 16725, 4294964565, 66901, 17179737429, 20821, 68719301973, 87381, ...
[ "nonn", "easy" ]
A351577
[ 1, 1, 1, 1, 3, 3, 1, 1, 1, 1, 3, 3, 5, 5, 5, 5, 15, 15, 25, 25, 25, 25, 75, 75, 1, 1, 1, 1, 3, 3, 1, 1, 1, 1, 3, 3, 5, 5, 5, 5, 15, 15, 25, 25, 25, 25, 75, 75, 7, 7, 7, 7, 21, 21, 7, 7, 7, 7, 21, 21...
[ "nonn", "base", "look" ]
A255063
[ 1, 0, 1, 2, 2, 5, 7, 14, 24, 52, 84, 173, 290, 586, 1038, 2025, 3740, 7177, 13498, 25832, 49027, 93918, 179291, 344128, 660058, 1270590, 2447944, 4728357, 9145214, 17718039, 34365068, 66717630, 129619518, 251953756, 489964171, 953141850, 185491...
[ "nonn" ]
A040311
[ 18, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6, 36, 6,...
[ "nonn", "cofr", "easy" ]
A176267
[ 5, 55, 1430, 4862, 1463, 1193010, 1015, 9414328, 18278, 749398, 370577311, 16723070, 225398683020, 7151980, 378683037040, 149846840, 8511300512, 272994644359580, 194480021970, 8516063242041795, 8175951659117794, 50, 42925, 3046258475, 391139588190, 1242164, 164664...
[ "nonn", "base" ]
A236292
[ 1, 2, 4, 8, 16, 27, 48, 75, 118, 178, 265, 377, 544, 760, 1048, 1437, 1949, 2611, 3480, 4594, 6024, 7867, 10184, 13122, 16823, 21484, 27258, 34495, 43425, 54499, 68105, 84870, 105322, 130412, 160832, 197932, 242776, 297145, 362535, 441464...
[ "nonn", "easy" ]
A031815
[ 14899, 32731, 37327, 37391, 43279, 44339, 44407, 51883, 55379, 56291, 58879, 66712, 67024, 68391, 72979, 74639, 76859, 86999, 87599, 89183, 92035, 93631, 96091, 102875, 110723, 111655, 111743, 112591, 113211, 116339, 117367, 118279, 122488 ]
[ "nonn" ]
A153486
[ -448, 217, 15113, 117137, 1771049, 4826297, 24137057, 47045369, 148035377, 594822809, 887503169, 2565725897, 4750103729, 6321362537, 10779214817, 22164360617, 42180533129, 51520373849, 90458381657, 128100283409, 151334225777, 243087455009 ]
[ "sign" ]
A125274
[ 1, 1, 3, 10, 42, 210, 1199, 7670, 54224, 418744, 3499781, 31425207, 301324035, 3069644790, 33078375153, 375634524357, 4480492554993, 55971845014528, 730438139266281, 9935106417137098, 140553930403702480 ]
[ "nonn" ]
A198877
[ 5, 3, 7, 2, 7, 2, 4, 7, 4, 7, 7, 2, 1, 2, 4, 6, 4, 5, 3, 7, 2, 0, 5, 1, 5, 0, 8, 5, 1, 2, 5, 3, 0, 2, 4, 2, 2, 8, 6, 3, 8, 0, 6, 0, 7, 0, 4, 1, 1, 1, 8, 7, 6, 1, 9, 3, 8, 4, 3, 2, 3, 8, 9, 5...
[ "nonn", "cons" ]
A267994
[ 64, 4096, 262144, 15625000, 895841344, 49592666024, 2667113508032, 139935778112213, 7186822291592000, 362265820143636030, 17961591171915325000, 877543597755135800000, 4.231073513194307e+22, 2.0157710694166036e+24, 9.499722957875463e+25, 4.4326657663129683e+27 ]
[ "nonn" ]
A032727
[ 2, 3, 6, 12, 17, 23, 26, 30, 33, 38, 39, 45, 53, 54, 57, 60, 65, 68, 69, 71, 72, 74, 78, 81, 87, 90, 93, 96, 99, 101, 105, 108, 113, 114, 116, 117, 126, 131, 137, 141, 149, 152, 155, 156, 158, 159, 164, 173, 179, 183, ...
[ "nonn", "base" ]
A105444
[ 5, 5, 5, 5, 7, 5, 7, 5, 5, 5, 7, 5, 5, 7, 5, 5, 7, 5, 7, 5, 7, 5, 5, 5, 5, 13, 11, 7, 5, 13, 11, 7, 5, 5, 7, 5, 5, 11, 7, 5, 5, 13, 11, 7, 5, 5, 7, 5, 11, 7, 5, 5, 5, 7, 5, 5, 13, 11, 7, 5, 5, 1...
[ "nonn" ]
A301815
[ 0, 9, 1, 8, 6, 6, 7, 2, 6, 2, 9, 9, 1, 5, 3, 9, 9, 0, 3, 7, 9, 6, 4, 2, 2, 3, 4, 0, 7, 1, 8, 7, 8, 0, 9, 1, 4, 1, 3, 6, 2, 9, 2, 8, 0, 5, 6, 0, 6, 4, 1, 2, 1, 2, 3, 6, 1, 0, 8, 7, 2, 0, 8, 3...
[ "nonn", "cons" ]
A291205
[ 2, 13, 37, 50, 58, 61, 67, 73, 74, 89, 97, 111, 113, 122, 151, 157, 169, 173, 181, 183, 193, 229, 233, 241, 250, 257, 259, 274, 277, 283, 298, 307, 313, 314, 317, 337, 349, 353, 373, 386, 389, 394, 397, 401, 409, 421, 427, ...
[ "nonn", "easy" ]
A078605
[ 1, 12, 97, 672, 4261, 25588, 147821, 830576, 4566917, 24692980, 131682825, 694386864, 3626770709, 18790632772, 96675376705, 494382431552, 2514666026897, 12730690730212, 64177763220925, 322314275563424, 1613192327878789, 8049191357609204, 40048773875769450, 1987507537139...
[ "nonn" ]
A049832
[ 0, 1, 4, 7, 15, 18, 31, 40, 50, 61, 88, 87, 119, 136, 151, 170, 210, 225, 270, 273, 307, 342, 411, 396, 448, 501, 532, 563, 649, 626, 727, 750, 810, 875, 908, 923, 1029, 1094, 1159, 1166, 1300, 1275, 1432, 1443, 1491, 1608, ...
[ "nonn" ]
A302874
[ 8, 31, 72, 306, 1197, 4849, 23037, 114810, 603229, 3319946, 18585700, 105379875, 603107047, 3467522323, 19998520262, 115602617979, 669078024352, 3875760664026, 22464758703891, 130258464383067, 755475828119163 ]
[ "nonn" ]
A375837
[ 1, 0, 1, 0, 1, 1, 0, 1, 5, 3, 0, 1, 23, 41, 18, 0, 1, 119, 455, 515, 180, 0, 1, 719, 5139, 10985, 9255, 2700, 0, 1, 5039, 62713, 222551, 334040, 225855, 56700, 0, 1, 40319, 840265, 4619447, 10899840, 12686030, 7193340, 1587600, ...
[ "nonn", "tabl" ]
A032671
[ 3, 9, 11, 21, 23, 27, 29, 39, 53, 57, 59, 63, 77, 81, 83, 87, 101, 111, 117, 123, 147, 161, 167, 171, 179, 191, 209, 219, 221, 231, 233, 237, 243, 263, 269, 273, 287, 291, 293, 297, 311, 317, 329, 353, 363, 369, 377, 387, ...
[ "nonn", "base" ]
A033805
[ 1, 1, 1, 2, 0, 1, 2, 1, 1, 1, 1, 0, 3, 1, 0, 2, 1, 1, 1, 0, 1, 3, 1, 3, 1, 1, 3, 2, 2, 2, 4, 2, 1, 3, 1, 4, 3, 0, 3, 1, 3, 2, 2, 2, 3, 4, 3, 2, 4, 3, 2, 4, 3, 4, 2, 2, 5, 5, 5, 4, 0, 4, 2, 4...
[ "nonn" ]
A177656
[ 1, 1, 70, 34650, 63063000, 305540235000, 3244063941457921, 66318107269696030000, 2.3796139926036102e+24, 1.398010564317061e+29, 1.2738104011291232e+34, 1.7235425698717374e+39 ]
[ "nonn" ]
A151836
[ 1, 4, 4, 12, 4, 12, 12, 28, 4, 12, 12, 28, 20, 28, 36, 68, 4, 12, 12, 28, 20, 28, 36, 68, 36, 28, 36, 68, 68, 76, 100, 172, 12, 28, 12, 28, 20, 28, 36, 68, 36, 28, 36, 68, 68, 76, 100, 172, 76, 28, 36, 68, 68, ...
[ "nonn" ]
A290341
[ 1, 1, 6, 120, 28, 362880, 39916800, 91, 1307674368000, 355687428096000, 12160, 51090942171709440000, 179977838616576, 608608000, 1.0888869450418352e+28, 8.841761993739702e+30, 2401235200, 13359987584925696, 1.0333147966386145e+40, 2044818012160 ]
[ "nonn" ]
A026965
[ 1, 3, 10, 25, 66, 154, 360, 810, 1810, 3982, 8700, 18850, 40614, 87030, 185680, 394570, 835578, 1763998, 3713700, 7798770, 16340302, 34166086, 71303160, 148548250, 308980386, 641728494, 1330992460, 2757055810, 5704253430 ]
[ "nonn", "easy" ]
A058530
[ 1, 0, 7, 14, 29, 50, 92, 148, 246, 386, 603, 904, 1367, 1996, 2914, 4160, 5924, 8290, 11581, 15942, 21878, 29712, 40184, 53876, 71979, 95436, 126097, 165556, 216594, 281848, 365548, 471808, 607050, 777794, 993528, 1264338, 1604434, 2029026 ]
[ "nonn" ]
A289315
[ 1, 3, 36, 2052, 505764, 511718148, 2088275673636, 34176650317115652, 2.2390828503567114e+21, 5.869083881198249e+26, 6.1540220272911394e+32, 2.5811654582117464e+39, 4.3304685245392696e+46 ]
[ "nonn", "easy" ]
A197181
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 16, 18, 24, 28, 36, 45, 48, 60, 64, 70, 72, 75, 80, 84, 90, 96, 98, 128, 144, 168, 175, 180, 189, 192, 256, 280, 288, 360, 378, 384, 448, 480, 486, 567, 576, 588, 640, 648, 672, 675, 72...
[ "nonn", "base" ]
A057394
[ 1, 0, 0, -4, -12, -60, -220, -936, -4092, -17840, -80868, -356172, -1640872, -7433604, -34541160, -159080304, -743832276, -3469487112, -16321682424, -76796957940, -363235185312, -1720415299660, -8176521038556 ]
[ "sign" ]
A047088
[ 1, 4, 12, 37, 118, 380, 1229, 3989, 12987, 42394, 138709, 454768, 1493690, 4913969, 16189534, 53407853, 176397299, 583242159, 1930349545, 6394665589, 21201345460, 70346920007, 233581374587, 776105485336, 2580316142887, 8583746045611, 28570407158100 ]
[ "nonn" ]
A073145
[ 3, -1, -1, 5, -5, -1, 11, -15, 3, 23, -41, 21, 43, -105, 83, 65, -253, 271, 47, -571, 795, -177, -1189, 2161, -1149, -2201, 5511, -4459, -3253, 13223, -14429, -2047, 29699, -42081, 10335, 61445, -113861, 62751, 112555, -289167, 239363, ...
[ "easy", "sign" ]