id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A039645
[ 1, 2, 2, 3, 3, 2, 3, 3, 4, 5, 5, 2, 3, 3, 5, 4, 6, 2, 3, 5, 2, 5, 4, 3, 4, 4, 4, 5, 5, 3, 7, 4, 6, 6, 4, 4, 2, 3, 5, 5, 4, 4, 7, 2, 5, 5, 3, 6, 4, 4, 3, 8, 3, 8, 5, 5, 5, 5, 2, 3, 3, 4, 7, 7...
[ "nonn" ]
A083974
[ 3, 313, 13331, 33533, 1333331, 3331333, 323333323, 13333633331, 31333333313, 1333335333331, 3233333333323, 133333353333331, 332333333333233, 333333313333333, 33233333333333230, 1333333336333333200, 3333333313133333500, 133333333383333330000 ]
[ "base", "nonn" ]
A218318
[ 97, 15867, 2088919, 266461045, 34092332617, 4363582588561, 558512367132769, 71485808502020540, 9149693598322734000, 1.171098183646107e+21, 1.4989255703508642e+23, 1.9185222015257672e+25 ]
[ "nonn" ]
A217548
[ 6, 7, -65, -295, -1303, 20631, 89967, 392616, -6178549, -26970688, -117731275, 1852943703, 8088348131, 35306734632, -555682818080, -2425630962790, -10588208505263, 166644858132571, -727427431532172, 3175319503526856, -49975467287014790 ]
[ "sign" ]
A112024
[ 1, 5, 10, 25, 50, 100, 200, 500, 1000, 2000, 5000, 10000 ]
[ "nonn", "fini", "full" ]
A303419
[ 32, 2048, 123337, 7486281, 454377792, 27575294129, 1673515027797, 101563813268522, 6163796529251277, 374074067226358850, 22702145834085170000, 1.3777683898558676e+21, 8.361525602288014e+22 ]
[ "nonn" ]
A356275
[ 3, 2, 4, 2, 5, 3, 5, 5, 5, 4 ]
[ "more", "nonn" ]
A025855
[ 1, 0, 0, 1, 0, 0, 1, 0, 0, 2, 0, 1, 2, 0, 1, 2, 0, 1, 3, 0, 2, 3, 1, 2, 3, 1, 2, 4, 1, 3, 4, 2, 3, 5, 2, 3, 6, 2, 4, 6, 3, 4, 7, 3, 5, 8, 3, 6, 8, 4, 6, 9, 4, 7, 10, 5, 8, 10, 6, 8, 11, 6, 9, ...
[ "nonn", "easy" ]
A192272
[ 5, 8, 41, 56, 588, 946, 972, 1568, 2692, 5186, 6874, 8104, 17386, 27024, 63584, 84026, 96896, 167786, 197416, 2667584, 4921776, 5315554, 27914146, 30937248, 124370356, 505235234, 3238952914, 5079644880, 6698880678, 19672801456 ]
[ "nonn", "more" ]
A245006
[ 232, 582, 1563, 4384, 12939, 39198, 123629, 398003, 1324715, 4489759, 15653882, 55503161, 201686249, 744669554, 2809714695, 10764956657, 42053547589, 166724084605, 672761983296, 2753474296366, 11453358056417, 48292313841411, 206690703254636, 896160453214130 ]
[ "nonn" ]
A105272
[ 1, 1, 2, 1, 2, 2, 1, 4, 2, 2, 1, 4, 4, 2, 2, 1, 3, 6, 4, 2, 2, 1, 3, 6, 7, 4, 2, 2, 1, 6, 4, 3, 7, 4, 2, 2, 1, 6, 4, 3, 15, 14, 4, 2, 2, 1, 10, 4, 8, 5, 6, 14, 4, 2, 2, 1, 10, 21, 10, 5, 10, 6, ...
[ "nonn", "tabl" ]
A013938
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 57, 5...
[ "nonn" ]
A280833
[ 1, 1, 11, 1000, 1, 111101, 111, 11110000, 10111, 1111011100, 110001, 111110000101, 10111, 11111111011000, 1100011, 1111111100001000, 101001001, 111111110111001010, 1100001001, 11111111100001001000, 101001001, 1.111111111110111e+21, 11000001001 ]
[ "nonn", "easy" ]
A163274
[ 0, 2, 72, 648, 3200, 11250, 31752, 76832, 165888, 328050, 605000, 1054152, 1752192, 2798978, 4321800, 6480000, 9469952, 13530402, 18948168, 26064200, 35280000, 47064402, 61960712, 80594208, 103680000, 132031250, 166567752, 208324872 ]
[ "easy", "nonn" ]
A296836
[ 1, 1, 2, 3, -3, 20, 105, -5271, 133826, -2714517, 25525845, 2131781300, -235250824479, 17527695547713, -1124258412169438, 58383380825728030, -975024061456732000, -398903577787777940000, 9.764954621003575e+22, -1.706941935822332e+25 ]
[ "sign" ]
A344386
[ 1, 0, 4, 0, 0, 1, 5, 6, 9, 8, 4, 6, 8, 6, 4, 5, 4, 6, 7, 2, 9, 9, 6, 1, 4, 6, 4, 1, 6, 4, 6, 7, 1, 8, 9, 7, 0, 5, 3, 9, 6, 6, 7, 0, 9, 7, 5, 1, 0, 9, 2, 5, 3, 4, 8, 3, 3, 9, 7, 4, 0, 2, 5, 5...
[ "nonn", "cons" ]
A095666
[ 4, 1, 4, 1, 5, 4, 1, 6, 9, 4, 1, 7, 15, 13, 4, 1, 8, 22, 28, 17, 4, 1, 9, 30, 50, 45, 21, 4, 1, 10, 39, 80, 95, 66, 25, 4, 1, 11, 49, 119, 175, 161, 91, 29, 4, 1, 12, 60, 168, 294, 336, 252, 120, 33, 4, 1, ...
[ "nonn", "easy", "tabl" ]
A160448
[ 1, 1, 64, 8051, 7997683, 24883501301, 193492277719861, 3252016862827895300, 1.065620685949174e+23, 6.29238332609136e+27, 6.292383256086812e+32, 1.0133946122967588e+38 ]
[ "nonn" ]
A379132
[ 2, 7, 9, 3, 5, 2, 4, 9, 6, 0, 0, 7, 0, 0, 7, 9, 3, 1, 0, 5, 8, 1, 0, 1, 9, 1, 2, 7, 9, 9, 6, 3, 6, 8, 0, 7, 0, 5, 2, 5, 7, 7, 8, 6, 1, 0, 9, 0, 7, 3, 6, 2, 6, 2, 5, 3, 5, 8, 6, 5, 9, 8, 4, 3...
[ "nonn", "cons", "easy" ]
A059740
[ 1, 0, 1, 2, 3, 0, 12, 40, 100, 0, 1225, 6460, 28812, 0, 1037232, 9779616 ]
[ "dead" ]
A344084
[ 1, 2, 1, 2, 3, 1, 3, 2, 3, 1, 2, 3, 4, 1, 4, 2, 4, 3, 4, 1, 2, 4, 1, 3, 4, 2, 3, 4, 1, 2, 3, 4, 5, 1, 5, 2, 5, 3, 5, 4, 5, 1, 2, 5, 1, 3, 5, 1, 4, 5, 2, 3, 5, 2, 4, 5, 3, 4, 5, 1, 2, 3, 5, 1...
[ "nonn", "tabf" ]
A243819
[ 10201, 10403, 10609, 10807, 11009, 11021, 31007, 40501, 41303, 41309, 42907, 43709, 50803, 51409, 51809, 60701, 61307, 61903, 64307, 65509, 70801, 71609, 72203, 73027, 75007, 76409, 81709, 91607, 97049, 101909, 102313, 102919, 103121, 103927, 10413...
[ "nonn", "base", "easy" ]
A101959
[ 2, 8, 14, 20, 26, 86, 179, 1940, 3959, 4994, 8576, 23480, 27854, 80594 ]
[ "nonn", "hard", "more" ]
A098001
[ 0, 3, 7, 10, 18 ]
[ "hard", "nonn" ]
A240470
[ 1, 1, 2, 3, 4, 6, 9, 12, 14, 16, 19, 24, 25, 26 ]
[ "nonn", "more" ]
A044700
[ 68, 149, 230, 311, 392, 473, 554, 620, 635, 716, 797, 878, 959, 1040, 1121, 1202, 1283, 1349, 1364, 1445, 1526, 1607, 1688, 1769, 1850, 1931, 2012, 2078, 2093, 2174, 2255, 2336, 2417, 2498, 2579, 2660, 2741, 2807, 2822 ]
[ "nonn", "base" ]
A149278
[ 1, 1, 4, 11, 42, 156, 623, 2562, 10775, 46314, 202193, 894617, 4001675, 18074562, 82287790, 377248774, 1740375992, 8071596078, 37613773364, 176041132719, 827032930155, 3898722302211, 18437091951270, 87434285061334, 415710323685474, 1981238899857338, 94628050050345...
[ "nonn", "walk" ]
A157533
[ 108649, 140869, 168409, 184609, 904861, 906481, 946801, 968041, 1016489, 1041869, 1048609, 1061849, 1064689, 1068409, 1068491, 1084469, 1084609, 1086469, 1089461, 1098469, 1108469, 1146809, 1184069, 1406689, 1406849, 1408619, 1408699, 1460089, 1460189, 14609...
[ "nonn", "base" ]
A162732
[ 1, 29, 435, 4494, 35931, 236901, 1340408, 6688531, 30022569, 123054221, 465973276, 1645558368, 5461104956, 17140618084, 51153912696, 145821399597, 398621995827, 1048532319201, 2661833593149, 6538864924476, 15579750854262 ]
[ "nonn" ]
A381605
[ 1, 1, 2, 2, 3, 2, 2, 2, 3, 3, 3, 3, 3, 3, 2, 2, 4, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 2, 4, 3, 3, 3, 4, 3, 3, 3, 4, 4, 3, 3, 4, 2, 4, 3, 4, 3, 4, 3, 4, 4, 3, 3, 3, 4, 3, 4, 4, 2, 5, 2, 4, 4, 2, 4...
[ "nonn" ]
A377029
[ 0, 2, 6, 22, 406, 92566, 6818458006, 26055178074437810000, 5.402138990287327e+38, 1.6355100350686256e+77 ]
[ "nonn", "base", "easy" ]
A363167
[ 200651, 222343, 283679, 319957, 363341, 385033, 408221, 428417, 452353, 463573, 483923, 491249, 513689, 526031, 544357, 546601, 547723, 580261, 605693, 671143, 688721, 696377, 698819, 739211, 740333, 742951, 743699, 747881, 771661, 774367, 783343, 790801...
[ "nonn" ]
A065604
[ 3, 1037, 619697, 218688017, 32617225577 ]
[ "hard", "nonn" ]
A312672
[ 1, 4, 8, 14, 20, 25, 28, 31, 37, 42, 47, 53, 59, 65, 66, 68, 75, 78, 84, 93, 98, 104, 104, 106, 114, 114, 120, 132, 138, 143, 141, 144, 154, 151, 156, 170, 177, 183, 178, 181, 194, 189, 193, 208, 215, 222, 216, 218, 233,...
[ "nonn" ]
A387618
[ 1, 2, 1, 2, 3, 1, 2, 1, 5, 6, 1, 2, 3, 2, 7, 1, 1, 5, 3, 2, 9, 10, 1, 2, 3, 1, 6, 2, 5, 11, 2, 1, 6, 2, 1, 2, 1, 13, 1, 2, 2, 5, 5, 7, 1, 1, 7, 14, 15, 1, 2, 1, 2, 6, 1, 3, 3, 5, 14, 1, 1, 2, ...
[ "nonn" ]
A284192
[ 1, 4, 43, 5268, 1488503, 3083244672, 18564422929880, 573011303756296700, 6.295944714844342e+22 ]
[ "nonn" ]
A139156
[ 81, 561, 4481, 40321, 403201, 4435201, 53222401, 691891201, 9686476801, 145297152001, 2324754432001, 39520825344001, 711374856192001, 13516122267648000, 270322445352960000, 5676771352412160000 ]
[ "nonn" ]
A224231
[ 1, 2, 5, 32, 1249, 5986000, 438522193400489, 3.126430743599146e+30, 1.0008815260914521e+61 ]
[ "nonn" ]
A213768
[ 1, 4, 3, 10, 8, 5, 21, 18, 12, 7, 40, 35, 26, 16, 9, 72, 64, 49, 34, 20, 11, 125, 112, 88, 63, 42, 24, 13, 212, 191, 152, 112, 77, 50, 28, 15, 354, 320, 257, 192, 136, 91, 58, 32, 17, 585, 530, 428, 323, 232, 160, ...
[ "nonn", "tabl", "easy" ]
A362941
[ 24, 48, 168, 360, 960, 1848, 3720, 5328, 10608, 11880, 19320, 22800, 32760, 37248, 39600, 52440, 58080, 73440, 80088, 97968, 121800, 177240, 187488, 214368, 273528, 326040, 361200, 383160, 413448, 436920, 657720, 677328, 687240, 737880, 779688, 1...
[ "nonn" ]
A214882
[ 1, 1, 5, 1, 29, 57, 37, 33, 109, 841, 373, 3761, 8125, 9817, 8517, 41025, 73741, 67177, 118293, 967377, 822621, 3100537, 6492133, 16397921, 33478573, 13406601, 83211957, 177703665, 35540733, 114482329, 881889925, 176377985, 35275597, 15468937385, 3...
[ "nonn", "base" ]
A384261
[ 1, 1, 12, 210, 5040, 154440, 5765760, 253955520, 12893126400, 741354768000, 47621141568000, 3379847863392000, 262662462526464000, 22183557976419840000, 2.0231404874494894e+21, 1.9815537107630276e+23, 2.0744817468539834e+25, 2.3117087724216405e+27 ]
[ "nonn", "easy" ]
A358954
[ 1, 4, 36, 384, 4568, 57920, 768760, 10543120, 148247390, 2125715618, 30965114225, 456956616284, 6817011617601, 102640570550600, 1557716916728198, 23804070258610024, 365964582592739500, 5656501536118793000, 87846324474413120000, 1.3700976097282126e+21, 2.1451062781643458e+22 ]
[ "nonn" ]
A379366
[ 1, 3, 15, 120, 360, 360, 4680, 936, 6552, 19656, 19656, 12285, 61425, 61425, 61425, 982800, 10810800, 10810800, 399999600, 399999600, 30769200, 30769200, 30769200, 30769200, 399999600, 79999920, 239999760, 239999760, 4559995440, 911999088, 55631944368, 2...
[ "nonn", "easy", "frac" ]
A256131
[ 3, 12, 20, 100, 10000000000 ]
[ "nonn" ]
A038522
[ 1, 1, 8, 20, 32, 52, 68, 76, 96, 96, 120, 120, 148, 148, 176, 176, 204, 204, 232, 232, 260, 260, 288, 288, 316, 316, 344, 344, 372, 372, 400, 400, 428, 428, 456, 456, 484, 484, 512, 512, 540, 540, 568, 568, 596, 596, 624, ...
[ "easy", "nonn", "walk", "nice" ]
A352158
[ 22, 25, 144, 220, 225, 250, 1056, 1184, 1440, 2184, 2200, 2250, 2500, 10560, 11840, 14400, 15625, 20625, 21024, 21840, 22000, 22500, 25000, 104192, 105600, 115625, 118400, 144000, 156250, 168192, 179712, 206250, 210240, 213312, 218400, 220000 ]
[ "nonn", "base" ]
A019061
[ 4, 2, 14, 160, 900, 4886, 30682, 192510, 1224950, 7984182, 52634438, 351382520, 2369835680, 16119973510, 110532124292 ]
[ "nonn", "more" ]
A119799
[ 0, 1, 2, 3, 4, 12, 13, 14, 15, 16, 17, 18, 19, 20, 23, 24, 25, 26, 27, 28, 29, 30, 31, 34, 35, 36, 37, 38, 39, 40, 41, 42, 45, 46, 47, 48, 49, 50, 56, 57, 58, 59, 61, 72, 83, 94, 100, 102, 103, 104, 105, 107, 108...
[ "nonn", "base" ]
A069953
[ 10, 28, 51, 170, 243, 246, 946, 1128, 1281, 1353, 1695, 2431, 4336, 4411, 4625, 4803, 7501, 7936, 8625, 11914, 12545, 13255, 15051, 16385, 24643, 27870, 29404, 31828, 33490, 36751, 39676, 47046, 52801, 53291, 55471, 58807, 66249, 72076, 740...
[ "easy", "nonn" ]
A070796
[ 106, 152, 179, 205, 251, 278, 304, 350, 377, 379, 403, 476, 478, 479, 502, 509, 575, 577, 578, 601, 608, 674, 676, 677, 700, 707, 773, 775, 776, 806, 872, 874, 875, 905, 971, 973, 974, 1019, 1054, 1060, 1082, 1093, 1109, 1144, 1...
[ "base", "nonn" ]
A227245
[ 1, 3, 9, 11, 17, 33, 41, 51, 73, 99, 101, 123, 137 ]
[ "nonn", "fini" ]
A384636
[ 1175, 231917, 434137, 534743, 595347, 10310197, 107103101, 137131127, 149139137, 163157151, 167163157, 179173167, 223211199, 239233229, 251241239, 269263257, 281277271, 293283281, 311307293, 349347337, 383379373, 401397389, 419409401, 421419409, 449443439, 457449443...
[ "nonn", "base" ]
A088354
[ 1, 2, 4, 10, 24, 60, 150, 376, 944, 2372, 5962, 14988, 37684, 94752, 238252, 599090, 1506440, 3788036, 9525280, 23952020, 60229184, 151450970, 380835368, 957640640, 2408063340, 6055266600, 15226449480, 38288118984, 96278523274, 242100012876, 608779761460, ...
[ "nonn", "easy" ]
A068442
[ 6, 10, 11, 17, 18, 19, 21, 25, 30, 32, 34, 35, 39, 40, 41, 43, 45, 49, 57, 58, 61, 64, 65, 75, 78, 79, 80, 85, 88, 89, 95, 96, 98, 103, 109, 113, 115, 116, 119, 122, 123, 125, 126, 128, 134, 135, 139, 140, 141, 143, ...
[ "easy", "nonn", "base" ]
A117843
[ 2, 3, 5, 7, 11, 13, 17, 19, 29, 43, 173, 179, 193, 683, 1657, 2731, 3677, 3733, 4001, 5743, 7823, 7841, 7901, 9421, 63031, 63773, 93287, 157229, 213539, 235447, 1008503, 1849259, 3144571, 16262297, 4146957827, 24968880823, 499377616471 ]
[ "nonn", "uned" ]
A209298
[ 1, 1, 0, 4, 6, 30, 348, 1580, 12516, 114884, 1375776, 12239280, 160067160, 1966619512, 28104385008, 428735710000, 6769181533968, 110402248461840, 2070626881211136, 38342125010072380, 764180537501729400, 16185744192232110000, 354756690964676500000 ]
[ "nonn" ]
A194626
[ 2, 3, 5, 6, 8, 16, 17, 19, 34, 36, 39, 40, 42, 49, 69, 71, 74, 78, 80, 85, 132, 167, 175, 176, 180, 181, 225, 238, 261, 271, 320, 331, 338, 340, 341, 353, 365, 371, 507, 689, 690, 706, 721, 738, 746, 921, 932, 952, 990, ...
[ "nonn" ]
A192619
[ 1, 4, 20, 104, 556, 3048, 17064, 97216, 562036, 3289836, 19461448, 116178600, 699045176, 4235292680, 25816944176, 158223753376, 974389668364, 6026623271840, 37420762694588, 233179517592232, 1457706542138344, 9139698522931008 ]
[ "nonn" ]
A382107
[ 4, 6, 7, 9, 1, 3, 9, 3, 4, 5, 7, 2, 6, 9, 1, 0, 4, 7, 3, 8, 9, 8, 7, 0, 3, 4, 3, 9, 8, 9, 5, 5, 0, 9, 9, 4, 8, 1, 1, 6, 5, 5, 6, 0, 5, 7, 6, 9, 2, 1, 0, 5, 3, 5, 3, 1, 1, 6, 2, 5, 3, 1, 9, 9...
[ "nonn", "cons" ]
A005563
[ 0, 3, 8, 15, 24, 35, 48, 63, 80, 99, 120, 143, 168, 195, 224, 255, 288, 323, 360, 399, 440, 483, 528, 575, 624, 675, 728, 783, 840, 899, 960, 1023, 1088, 1155, 1224, 1295, 1368, 1443, 1520, 1599, 1680, 1763, 1848, 1935, 2024, ...
[ "nonn", "easy" ]
A337644
[ 2128, 4689, 7742, 11011, 11508, 12277, 16398, 20227, 22556, 23709, 26922, 31455, 36016, 36857, 39014, 39563, 45804, 47213, 47738, 48847, 48932, 50805, 53062, 57575, 58784, 60281, 63594, 66251, 68872, 74021, 79238, 84175, 89428, 91709, 92902, 9294...
[ "nonn" ]
A016187
[ 1, 19, 273, 3515, 42761, 503139, 5796673, 65860555, 741243321, 8287894259, 92240578673, 1023236299995, 11324318776681, 125117262357379, 1380687932442273, 15222751628953836, 167731742895202850, 1847300971660916500, 20338325086779564000, 223865691142651050000, 2.463675524073768...
[ "nonn", "easy" ]
A304866
[ 1, 1, 5, 40, 434, 5921, 97152, 1861224, 40757712, 1003975497, 27471881920, 826643389408, 27127000901376, 964082532067097, 36887864803320830, 1511803871474267000, 66072899130124804000, 3.0674346103570794e+21, 1.5074867187525048e+23, 7.818483194884075e+24, 4.267605058291703e+26...
[ "nonn" ]
A249079
[ 0, 29, 58, 87, 116, 145, 174, 203, 232, 261, 290, 319, 348, 377, 406, 436, 465, 494, 523, 552, 581, 610, 639, 668, 697, 726, 755, 784, 813, 842, 871, 900, 929, 958, 987, 1016, 1045, 1074, 1103, 1132, 1161, 1190, 1219, 1248, 1278...
[ "nonn" ]
A160729
[ 6, 6, 12, 24, 24, 24, 24, 24, 48, 96, 96, 48, 24, 24, 48 ]
[ "more", "nonn" ]
A260993
[ 22, 23, 26, 28, 29, 30, 31, 33, 35, 37, 39, 40, 41, 43, 46, 47, 48, 50, 53, 59, 61, 65, 71, 79, 83, 89, 101, 131 ]
[ "nonn", "fini", "full" ]
A346473
[ 0, 0, 1, 2, 1, 3, 3, 6, 12, 9, 1, 5, 3, 15, 11, 14, 1, 12, 3, 15, 23, 27, 5, 9, 18, 33, 25, 25, 1, 15, 5, 30, 37, 45, 29, 14, 3, 51, 39, 27, 1, 27, 3, 45, 37, 63, 5, 17, 64, 54, 53, 55, 5, 39, 19, 45, 65,...
[ "sign", "look" ]
A079366
[ 11, 2, 11, 5, 5, 2, 5, 3, 17, 11, 3, 3, 11, 3, 3, 11, 5, 3, 23, 7, 5, 97, 29, 37, 107, 127, 29, 17, 409, 127, 11, 29, 5, 67, 19, 43, 31, 19, 103, 59, 29, 7, 3, 11, 11, 5, 47, 29, 11, 3, 5, 5, 3, 17, 5, 29, ...
[ "nonn", "easy" ]
A352734
[ 1, 3, 4, 6, 11, 12, 13, 15, 26, 28, 34, 48, 51, 53, 60, 67, 69, 72, 111, 132, 139, 160, 163, 245, 257, 269, 291, 338, 375, 406, 477, 660, 707, 717, 775, 780, 800, 851, 872, 887, 930, 933, 984, 1023, 1406, 1492, 1644, 1664,...
[ "nonn" ]
A181800
[ 1, 4, 8, 16, 32, 36, 64, 72, 128, 144, 216, 256, 288, 432, 512, 576, 864, 900, 1024, 1152, 1296, 1728, 1800, 2048, 2304, 2592, 3456, 3600, 4096, 4608, 5184, 5400, 6912, 7200, 7776, 8192, 9216, 10368, 10800, 13824, 14400, 15552, 1638...
[ "nonn" ]
A350932
[ 1, 2, -11, -286, -57935, -5696488, -1764195984, -521528189252 ]
[ "sign", "hard", "more" ]
A374770
[ 1, 3, 4, 11, 6, 24, 8, 59, 40, 68, 12, 284, 14, 192, 384, 795, 18, 1590, 20, 2876, 2552, 2192, 24, 17972, 3156, 8388, 20560, 35620, 30, 116474, 32, 144091, 178512, 131396, 94968, 1118426, 38, 524688, 1596560, 2569884, 42, 7280934, 4...
[ "nonn", "more" ]
A366273
[ 1, 1, 9, 81, 849, 9681, 116601, 1459809, 18809121, 247782369, 3322209001, 45187029809, 621970864241, 8647376531249, 121261376439641, 1713085987837889, 24358211622230080, 348325689458584770, 5006342381846708000, 72279683684984060000, 1.0477891953533798e+21 ]
[ "nonn" ]
A283615
[ 1, 1, 2, 1, 1, 2, 5, 4, 2, 1, 2, 7, 16, 18, 12, 4, 1, 2, 11, 32, 70, 92, 82, 40, 10, 1, 2, 13, 56, 166, 348, 510, 520, 350, 140, 26, 1, 2, 17, 88, 336, 932, 1948, 2992, 3404, 2756, 1518, 504, 80, 1, 2, 19, 124, ...
[ "nonn", "tabf" ]
A329613
[ 324, 1296, 2500, 5625, 9604, 10000, 11664, 20736, 21609, 38416, 50625, 58564, 60025, 82944, 90000, 114244, 131769, 160000, 194481, 234256, 236196, 250000, 257049, 334084, 345744, 360000, 366025, 456976, 521284, 614656, 640000, 714025, 717409, 751689,...
[ "nonn" ]
A009396
[ 0, 2, -24, 742, -46424, 4924442, -795624324, 182148217942, -56122289514224, 22395847873848240, -11236967462922273000, 6.923916000862957e+21, -5.139905036702597e+24, 4.5243789249707215e+27 ]
[ "sign" ]
A050143
[ 1, 0, 1, 0, 1, 1, 0, 1, 3, 1, 0, 1, 4, 7, 1, 0, 1, 5, 12, 15, 1, 0, 1, 6, 18, 32, 31, 1, 0, 1, 7, 25, 56, 80, 63, 1, 0, 1, 8, 33, 88, 160, 192, 127, 1, 0, 1, 9, 42, 129, 280, 432, 448, 255, 1, 0, 1, 10,...
[ "nonn", "tabl" ]
A181940
[ 0, 1, 0, 2, 0, 1, 3, 1, 0, 2, 4, 2, 0, 1, 3, 5, 3, 1, 0, 2, 4, 6, 4, 2, 0, 1, 3, 5, 7, 5, 3, 1, 0, 2, 4, 6, 8, 6, 4, 2, 0, 1, 3, 5, 7, 9, 7, 5, 3, 1, 0, 2, 4, 6, 8, 10, 8, 6, 4, 2, 0, 1, 3, ...
[ "nonn" ]
A158241
[ 2, 7, 6, 7, 8, 7, 1, 7, 9, 4, 4, 8, 5, 2, 2, 6, 2, 5, 7, 5, 4, 2, 6, 6, 3, 6, 5, 0, 4, 4, 6, 3, 4, 2, 6, 0, 0, 1, 7, 5, 1, 1, 9, 1, 1, 3, 5, 0, 3, 5, 8, 1, 6, 1, 6, 6, 9, 1, 3, 4, 8, 0, 1, 8...
[ "cons", "nonn" ]
A015121
[ 1, 1, 1, 1, -8, 1, 1, 73, 73, 1, 1, -656, 5986, -656, 1, 1, 5905, 484210, 484210, 5905, 1, 1, -53144, 39226915, -352504880, 39226915, -53144, 1, 1, 478297, 3177326971, 257015284435, 257015284435, 3177326971, 478297, 1, 1, -4304672, 25736396...
[ "sign", "tabl", "easy" ]
A293392
[ 0, 1, 2, 3, 6, 7, 10, 13, 16, 21, 24, 29, 36, 37, 40, 43, 48, 55, 60, 69, 78, 89, 100, 109, 122, 135, 138, 145, 152, 161, 172, 183, 200, 217, 236, 255, 270, 287, 304, 319, 336, 349, 358, 375, 392, 413, 438, 457, 476, 4...
[ "nonn" ]
A107794
[ 12, 18, 21, 34, 65, 67, 81, 92, 98, 102, 108, 138, 150, 180, 192, 198, 225, 231, 279, 310, 314, 334, 350, 356, 370, 376, 386, 405, 435, 453, 483, 495, 504, 552, 582, 607, 613, 625, 637, 647, 653, 667, 726, 750, 780, 819, 831...
[ "base", "nonn" ]
A045079
[ 3087, 3123, 3132, 3267, 3276, 3312, 3843, 3852, 3888, 4032, 4159, 4303, 4339, 4348, 4879, 4915, 4924, 5059, 5068, 5104, 7183, 7219, 7228, 7363, 7372, 7408, 7939, 7948, 7984, 8128, 8255, 8399, 8435, 8444, 8975, 9011 ]
[ "nonn", "base" ]
A321376
[ 1, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 0, 0, -1, 0, 1, -1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 2, 0, 1, 1, 4, 0, 0, 0, 2, 0, -1, 1, 2, 0, 0, -1, 2, 1, -1, -1, -1, ...
[ "sign", "look" ]
A083340
[ 6, 7, 8, 12, 15, 16, 17, 18, 19, 28, 29, 41, 45, 53, 55, 61, 73 ]
[ "nonn", "more", "hard" ]
A377058
[ 1, 5, 1, 32, 11, 1, 248, 113, 18, 1, 2248, 1230, 263, 26, 1, 23272, 14534, 3765, 505, 35, 1, 270400, 186992, 55654, 9115, 865, 45, 1, 3479744, 2612000, 865186, 163779, 19110, 1372, 56, 1, 49079936, 39434448, 14235388, 3013164, 408569, ...
[ "nonn" ]
A340801
[ 0, 1, 7, 2, 23, 3, 47, 4, 8, 5, 119, 6, 167, 7, 14, 8, 287, 9, 359, 10, 20, 11, 527, 12, 24, 13, 26, 14, 839, 15, 959, 16, 32, 17, 34, 18, 1367, 19, 38, 20, 1679, 21, 1847, 22, 44, 23, 2207, 24, 48, 25, 50, 26, 2...
[ "nonn" ]
A178402
[ 13, 14, 15, 16, 17, 18, 19, 20, 24, 25, 26, 27, 28, 29, 30, 31, 35, 36, 37, 38, 39, 40, 41, 42, 46, 47, 48, 49, 50, 51, 52, 53, 57, 58, 59, 60, 61, 62, 63, 64, 68, 69, 70, 71, 72, 73, 74, 75, 79, 80, 81, 82, 83, ...
[ "base", "nonn" ]
A129712
[ 1, 2, 2, 1, 4, 1, 6, 1, 1, 10, 2, 1, 16, 3, 1, 1, 26, 5, 2, 1, 42, 8, 3, 1, 1, 68, 13, 5, 2, 1, 110, 21, 8, 3, 1, 1, 178, 34, 13, 5, 2, 1, 288, 55, 21, 8, 3, 1, 1, 466, 89, 34, 13, 5, 2, 1, 754, 144, ...
[ "nonn", "tabf" ]
A386331
[ 2, 3, 7, 23, 29, 37, 43, 47, 67, 73, 79, 83, 89, 97, 223, 227, 229, 233, 239, 263, 269, 277, 283, 293, 307, 337, 347, 349, 367, 373, 379, 383, 389, 397, 409, 433, 439, 443, 449, 463, 467, 479, 487, 499, 607, 643, 647, 673,...
[ "nonn", "base", "easy" ]
A385892
[ 1, 2, 1, 3, 1, 2, 4, 1, 1, 2, 3, 5, 1, 1, 1, 2, 2, 3, 4, 6, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, 5, 7, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 6, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1...
[ "nonn" ]
A184067
[ 54, 134, 924, 7671, 56723, 288744, 1201502, 4136338, 11927710, 29250767, 62876028, 120904433, 212281665, 345771803, 530007739, 773304379, 1083892502, 1469984808, 1939804454, 2501586120, 3163566510, 3933982328, 4821070278, 5833067064 ]
[ "nonn" ]
A318368
[ 1, 3, 13, 27, 81, 183, 449, 987, 2317, 5043, 11265, 24399, 53249, 114243, 245853, 523227, 1114113, 2357175, 4980737, 10480587, 22020557, 46126083, 96468993, 201302799, 419430481, 872361987, 1811941645, 3757981275, 7784628225, 16105886823, 33285996545, 68...
[ "nonn" ]
A336838
[ 1, 2, 3, 13, 4, 6, 6, 10, 31, 8, 7, 13, 9, 12, 12, 121, 10, 62, 12, 52, 18, 14, 15, 30, 19, 18, 39, 26, 16, 24, 19, 182, 21, 20, 24, 403, 21, 24, 27, 40, 22, 36, 24, 91, 124, 30, 27, 363, 133, 38, 30, 39, 30, 7...
[ "nonn", "frac" ]
A184387
[ 1, 6, 10, 28, 21, 78, 36, 120, 91, 171, 78, 406, 105, 300, 300, 496, 171, 780, 210, 903, 528, 666, 300, 1830, 496, 903, 820, 1596, 465, 2628, 528, 2016, 1176, 1485, 1176, 4186, 741, 1830, 1596, 4095, 903, 4656, 990, 3570, 3081, ...
[ "nonn" ]
A326480
[ 1, -2, 2, 2, -8, 4, 4, 12, -24, 8, -16, 32, 48, -64, 16, -32, -160, 160, 160, -160, 32, 272, -384, -960, 640, 480, -384, 64, 544, 3808, -2688, -4480, 2240, 1344, -896, 128, -7936, 8704, 30464, -14336, -17920, 7168, 3584, -2048, ...
[ "sign", "tabl" ]
A101020
[ 1, 1, 1, 1, 4, 2, 1, 9, 6, 2, 1, 16, 24, 32, 8, 1, 25, 200, 40, 40, 8, 1, 36, 150, 160, 360, 32, 16, 1, 49, 294, 490, 280, 56, 112, 16, 1, 64, 1568, 6272, 1120, 3584, 1792, 1024, 128, 1, 81, 864, 14112, 18144, 2016, ...
[ "nonn", "frac", "tabl", "easy" ]
A271353
[ 7, 3, 2, 3, 2, 3, 2, 5, 5, 3, 2, 3, 2, 5, 5, 3, 2, 3, 2, 5, 5, 3, 2, 7, 7, 5, 5, 3, 2, 3, 2, 7, 7, 5, 5, 3, 2, 5, 5, 3, 2, 3, 2, 5, 5, 3, 2, 7, 7, 5, 5, 3, 2, 7, 7, 5, 5, 3, 2, 3, 2, 7, 7, 5...
[ "nonn", "easy" ]
A382971
[ 1, 4, 7, 13, 7, 28, 25, 46, 13, 46, 43, 79, 49, 133, 73, 160, 55, 109, 91, 211, 73, 238, 199, 337, 133, 343, 187, 388, 211, 523, 277, 607, 205, 478, 241, 559, 259, 679, 361, 748, 379, 805, 493, 967, 523, 1042, 709, 1372, ...
[ "nonn" ]