id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A274614
[ 2, 5, 6, 3, 1, 9, 4, 7, 8, 13, 14, 11, 12, 10, 18, 15, 16, 21, 22, 19, 17, 25, 20, 23, 24, 29, 30, 27, 28, 26, 34, 31, 32, 37, 38, 35, 33, 41, 36, 39, 40, 45, 46, 43, 44, 42, 50, 47, 48, 53, 54, 51, 49, 57, 5...
[ "nonn" ]
A021388
[ 0, 0, 2, 6, 0, 4, 1, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6...
[ "nonn", "cons", "easy" ]
A054071
[ 1, 1, 2, 2, 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 8, 8, 8, 9, 9, 10, 10, 10, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 15, 16, 16, 17, 17, 17, 18, 18, 19, 19, 20, 20, 20, 21, 21, 22, 22, 22, 23, 23, 24, 2...
[ "nonn" ]
A287434
[ 45, 24885, 315, 45, 340725, 196365, 15, 10965, 196365, 10465, 1652115781968795, 340725, 25245, 3.976914451825623e+66, 15345, 13695, 6232413355673505, 79365 ]
[ "nonn" ]
A294518
[ 5, 0, 8, 6, 4, 5, 2, 1, 4, 8, 8, 4, 9, 3, 9, 3, 0, 9, 0, 2, 0, 3, 7, 4, 6, 7, 2, 7, 3, 4, 7, 7, 8, 2, 6, 2, 1, 2, 7, 9, 1, 5, 7, 0, 3, 3, 9, 3, 2, 1, 2, 8, 5, 1, 8, 7, 4, 5, 6, 7, 7, 3, 2, 3...
[ "nonn", "cons" ]
A283257
[ 1, 11, 111, 1111, 10111, 110111, 1011111, 11011111, 101010111, 1101110111, 10001011111, 110101011111, 1000101010111, 11010001110111, 100010101011111, 1101010101011111, 10001010101010112, 110100010001110110, 1000101010101011100, 11010100010101010000 ]
[ "nonn", "easy" ]
A215715
[ 1, 2, 13, 118, 1242, 14227, 172177, 2165732, 28032668, 370944717, 4995412647, 68239105203, 943278064473, 13169938895473, 185453340189492, 2630813161415976, 37561512615867450, 539336703889993000, 7783290731579783000, 112828761898680980000, 1.6422225048071433e+21 ]
[ "nonn" ]
A018526
[ 1, 2, 7, 14, 41, 82, 287, 574 ]
[ "nonn", "fini", "full", "easy" ]
A157450
[ 1, 2, 3, 4, 6, 6, 9, 8, 10, 10, 24, 12, 32, 16, 18, 18, 64, 21, 81, 22, 28, 32, 144, 27, 40, 42, 36, 35, 288, 39, 384, 39, 56, 70, 63, 45, 729, 84, 75, 52, 1024, 56, 1296, 66, 66, 128, 1944, 60, 112, 78, 126, 88, ...
[ "nonn", "look" ]
A092635
[ 1, -2, 2, 4, -10, -92, 212, 4744, -10330, -440492, 926972, 64905784, -133989700, -13958115992, 28507072232, 4129849252624, -8382195909370, -1609609189734092, 3254514296768492, 799400112196210300, -1612314122867559400 ]
[ "sign" ]
A382255
[ 1, 2, 4, 3, 6, 8, 6, 5, 10, 12, 16, 12, 9, 12, 10, 7, 14, 20, 24, 18, 24, 32, 24, 20, 15, 18, 24, 18, 15, 20, 14, 11, 22, 28, 40, 30, 36, 48, 36, 30, 40, 48, 64, 48, 36, 48, 40, 28, 21, 30, 36, 27, 36, 48, 36...
[ "nonn", "look", "base" ]
A338734
[ 0, 0, 2, 89, 3360, 161280 ]
[ "dead" ]
A023757
[ 0, 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, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60...
[ "nonn", "base", "easy" ]
A300379
[ 1, 74, 131, 692, 6577, 53367, 481311, 4070089, 36505624, 319929622, 2837476138, 25246596055, 223898861023, 1988295398102, 17653104464628, 156742758122408, 1391761200734035, 12357651656612720, 109729025922861000 ]
[ "nonn" ]
A349774
[ 161596, 222778, 366796, 962578, 1611910, 2480878, 3301165, 4290985, 13320541, 23588146, 29272726, 43743981, 50818321, 68041945, 79512355, 100614205, 143981965, 161757091, 172896310, 194626585, 200710630, 275338311, 282161890, 352331785, 410712130, 457062495, 45709...
[ "nonn" ]
A123454
[ 1, 2, 4, 11, 33, 148, 875, 7675, 93735, 1557742 ]
[ "nonn", "more" ]
A000420
[ 1, 7, 49, 343, 2401, 16807, 117649, 823543, 5764801, 40353607, 282475249, 1977326743, 13841287201, 96889010407, 678223072849, 4747561509943, 33232930569601, 232630513987207, 1628413597910449, 11398895185373144, 79792266297612000, 558545864083284030 ]
[ "nonn", "easy" ]
A006288
[ 0, 1, 3, 4, 5, 11, 12, 13, 15, 16, 17, 19, 20, 21, 43, 44, 45, 47, 48, 49, 51, 52, 53, 59, 60, 61, 63, 64, 65, 67, 68, 69, 75, 76, 77, 79, 80, 81, 83, 84, 85, 171, 172, 173, 175, 176, 177, 179, 180, 181, 187, 188, ...
[ "nonn" ]
A069485
[ 13, 17, 37, 17, 29, 229, 13, 89, 137, 53, 233, 61, 353, 2029, 193, 37, 277, 821, 953, 61, 89, 101, 1481, 1733, 53, 2081, 269, 2333, 29, 14449, 3329, 3593, 293, 1597, 22501, 73, 25609, 373, 28909, 6197, 32401, 389, 101, 2237, 784...
[ "nonn" ]
A312496
[ 1, 4, 8, 14, 18, 22, 28, 28, 34, 40, 44, 50, 50, 60, 64, 64, 74, 78, 74, 84, 90, 88, 102, 96, 110, 116, 108, 126, 130, 118, 136, 140, 132, 152, 142, 162, 166, 154, 176, 182, 164, 186, 192, 176, 202, 186, 214, 218, 198, ...
[ "nonn" ]
A323323
[ 1, 1, 4, 39, 508, 8651, 180541, 4462875, 127461499, 4129414609, 149614338010, 5994046983553, 263101175224096, 12555981779337616, 647278321588763600, 35845661666812568000, 2.1222835425374456e+21, 1.337734193666064e+23, 8.943959013589399e+24, 6.322031377177885e+26, 4.7105820660...
[ "nonn" ]
A262738
[ 1, 10, 149, 2630, 51002, 1050132, 22539085, 498732014, 11296141454, 260613866380, 6103074997890, 144696786555580, 3466352150674324, 83776927644646940, 2040261954214847500, 50018542073019180000, 1.2334197798390674e+21, 3.057288683658169e+22 ]
[ "nonn", "easy" ]
A089809
[ 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1 ]
[ "nonn" ]
A148651
[ 1, 1, 3, 6, 24, 64, 225, 744, 2702, 9380, 34049, 127464, 472776, 1769652, 6775136, 26075746, 100305210, 389461385, 1532644757, 6016110125, 23710831146, 94354307856, 376564777974, 1502996930197, 6032442936774, 24345393485794, 98250061661231, 397450217055413, 16...
[ "nonn", "walk" ]
A088495
[ 0, 1, 5, 9, 16, 30, 54, 78, 102, 139, 198, 266, 337, 473, 525, 708, 840, 1032, 1210 ]
[ "nonn", "more" ]
A166642
[ 1, 6, 8, 36, 12, 48, 16, 216, 64, 72, 24, 288, 28, 96, 96, 1296, 36, 384, 40, 432, 128, 144, 48, 1728, 144, 168, 512, 576, 60, 576, 64, 7776, 192, 216, 192, 2304, 76, 240, 224, 2592, 84, 768, 88, 864, 768, 288, 96, 10368, ...
[ "nonn", "easy", "mult" ]
A240040
[ 2, 4, 26, 346, 7514, 640643, 104619164, 49892724623 ]
[ "nonn" ]
A102853
[ 1, 1, 2, 1, 3, 2, 3, 1, 2, 3, 2, 2, 3, 1, 3, 1, 4, 2, 2, 3, 2, 3, 2, 2, 3, 1, 4, 2, 3, 3, 3, 2, 3, 2, 3, 1, 3, 2, 3, 3, 5, 2, 2, 2, 4, 2, 4, 2, 2, 3, 4, 3, 2, 1, 6, 2, 3, 1, 4, 2, 3, 4, 3, 1...
[ "easy", "nonn" ]
A012965
[ 0, 2, -1, 8, -30, 110, -735, 6260, -46060, 353690, -3869325, 47962400, -535492650, 6256290950, -94256473675, 1540899327500, -23184083247000, 363941070067250, -6966275933345625, 141502264507955000 ]
[ "sign" ]
A210933
[ 1, 3, 45, 2597, 404200, 158571061, 155381740144, 379683866415546, 2311350169900872000, 3.5031061332072916e+22 ]
[ "nonn" ]
A186065
[ 85950, 2594364, 73704654, 1983108841, 56342354623, 1583479136326, 43674791825894, 1227206096949087, 34442516744766780, 955566424195215900, 26758623787941626000, 750296625321555100000, 2.0875762248134838e+22 ]
[ "nonn" ]
A216332
[ 1, 2, 3, 10, 27, 114, 409, 2066, 9089, 52922, 272947, 1788850, 10515147, 76282138, 501178937, 3974779402, 28773452321, 247083681522, 1949230218691, 17984917069018, 153281759047387, 1510073008031682, 13806215066685432 ]
[ "nonn" ]
A119329
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 7, 7, 1, 1, 1, 1, 13, 19, 13, 1, 1, 1, 1, 21, 37, 37, 21, 1, 1, 1, 1, 31, 61, 77, 61, 31, 1, 1, 1, 1, 43, 91, 141, 141, 91, 43, 1, 1, 1, 1, 57, 127, ...
[ "easy", "nonn", "tabl" ]
A294564
[ 1, 2, 7, 14, 27, 50, 86, 146, 243, 401, 657, 1074, 1747, 2838, 4603, 7460, 12083, 19564, 31669, 51256, 82949, 134230, 217205, 351464, 568698, 920192, 1488921, 2409145, 3898099, 6307278, 10205412, 16512726, 26718175, 43230939, 69949153, 113180132,...
[ "nonn", "easy" ]
A256829
[ 2, 5, 8, 13, 17, 50, 169, 193, 407, 1496, 1718, 3610, 6527, 6889, 12665, 15949, 23498, 32969, 44773, 110027 ]
[ "more", "hard", "nonn" ]
A200557
[ 142, 4978, 43698, 211374, 737460, 2076774, 5012084, 10807826, 21368704, 39388482, 68614738, 114064374, 182196622, 281328582, 421889370, 616590012, 881040966, 1234022180, 1697613488, 2298081194, 3066132222, 4036964078, 5251498784 ]
[ "nonn" ]
A367199
[ 1, 1, 8, 141, 3852, 143460, 6780642, 388851960, 26235133992, 2036243259648, 178742696099040, 17509589369568648, 1893647907646728200, 224106838102512860000, 2.880901847399964e+22, 3.997516614926297e+24, 5.9551879308090166e+26 ]
[ "nonn" ]
A163976
[ 1, 4, 4, 6, 10, 14, 16, 18, 22, 30, 30, 36, 40, 44, 46, 52, 60, 60, 68, 70, 72, 78, 84, 88, 98, 100, 102, 108, 108, 112, 126, 132, 136, 138, 150, 150, 158, 162, 166, 174, 178, 182, 190, 192, 196, 200, 210, 224, 226, 22...
[ "nonn" ]
A097601
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 99, 0, 0, 0, 0, 0, 0, 0, 0, 0, 198, 99, 0, 0, 0, 0, 0, 0, 0, 0, 297, 198, 99, 0, 0, 0, 0, 0, 0, 0, 396, 297, 198, 99, 0, 0, 0, 0, 0, 0, 495, 396, 297, 198, 99, 0, 0, 0, 0...
[ "easy", "sign", "base" ]
A220631
[ 1, 32, 564, 10695, 201903, 3817452, 72097810, 1362188752, 25734606523, 486186026515, 9185167500820, 173528846174065, 3278357276282501, 61935676290875220, 1170106754973419300, 22105996097313110000 ]
[ "nonn" ]
A010908
[ 4, 21, 110, 576, 3016, 15792, 82688, 432960, 2267008, 11870208, 62153216, 325438464, 1704017920, 8922353664, 46718050304, 244618887168, 1280841121792, 6706571182080, 35116062605312, 183870090903552, 962756295000064, 5041057406386176, 26395319258316800 ]
[ "nonn" ]
A023863
[ 4, 6, 20, 25, 52, 59, 104, 119, 186, 211, 306, 338, 464, 502, 663, 715, 914, 981, 1222, 1297, 1585, 1667, 2004, 2104, 2494, 2615, 3062, 3191, 3700, 3854, 4429, 4610, 5256, 5466, 6186, 6426, 7224, 7477, 8356, 8620, 9582, 9878, 10929,...
[ "nonn" ]
A148164
[ 1, 1, 2, 4, 11, 31, 98, 314, 1079, 3773, 13757, 50953, 193733, 747508, 2936032, 11676165, 47046523, 191533397, 787652467, 3267141729, 13661333890, 57536418899, 243931400240, 1040437757637, 4462518009660, 19238441448717, 83332985149012, 362554049022875, 1583800...
[ "nonn", "walk" ]
A186901
[ 14860, 19040, 122820, 608194, 2203303, 12599670, 85310077, 523902288, 2795274149, 16608468926, 108609778968, 679604170463, 3947135094182, 24085962638564, 153869560878987, 960883396722563, 5783252949932518 ]
[ "nonn" ]
A304765
[ 0, 209, 3680, 172574, 6978743, 292676592, 12219307955, 510976436144, 21366609684109, 893510784279365, 37365335846465490, 1562572262518146000, 65344912903528860000, 2.7326479075086843e+21, 1.1427615529533242e+23 ]
[ "nonn" ]
A139961
[ 17, 41, 113, 233, 401, 449, 521, 617, 641, 809, 857, 881, 929, 1049, 1193, 1217, 1289, 1433, 1553, 1601, 1697, 2081, 2153, 2273, 2417, 2441, 2657, 2777, 2897, 2969, 3089, 3257, 3329, 3593, 3881, 4001, 4049, 4073, 4289, 4409, 4457, 448...
[ "nonn", "easy" ]
A142172
[ 61, 139, 373, 607, 919, 997, 1153, 1231, 1543, 1621, 1699, 1777, 1933, 2011, 2089, 2557, 2713, 2791, 3181, 3259, 3571, 3727, 4273, 4507, 4663, 5209, 5443, 5521, 6067, 6301, 6379, 6691, 7159, 7237, 7393, 7549, 8017, 8329, 8563, 8641, 871...
[ "nonn", "easy" ]
A283038
[ 2, 68, 818, 9152, 94368, 931844, 8912378, 83420984, 767704036, 6973000128, 62669779812, 558371394860, 4938938283902, 43417600038648, 379661067157816, 3304658457345168, 28648616561102224, 247474652799713200 ]
[ "nonn" ]
A299363
[ 1, 127, 420, 8134, 107653, 1640199, 25838859, 404080073, 6401182687, 101230513082, 1603954364885, 25416664803983, 402828431317238, 6385064702920915, 101208286759833360, 1604268995224053000 ]
[ "nonn" ]
A333900
[ 1, 0, 0, 0, 1, 1, 130, 16700, 3330915, 957659906, 382304435016, 204772106834160, 143299238797934180, 128179127293763400000, 1.4386874098435187e+23, 1.9943805794597935e+26, 3.367932875483138e+29, 6.845213123469906e+32 ]
[ "nonn" ]
A245249
[ 1, 1, 7, 56, 609, 8960, 162015, 3455760, 85499505, 2407507200, 75954495015, 2654662651200, 101833013541105, 4253509461922560, 192174397814079140, 9338303873329240000, 485654062232697900000, 2.6915598265961377e+22, 1.583628181230906e+24 ]
[ "nonn", "easy" ]
A154835
[ 1, 1, 2, 4, 10, 26, 72, 205, 597, 1770, 5329, 16253, 50112, 155939, 489111, 1544723, 4908164, 15678715, 50323541, 162213311, 524895810, 1704407999, 5552027379, 18137964251, 59412854411, 195090277189, 642056206297, 2117485840188 ]
[ "nonn" ]
A192301
[ 0, 3, 7, 19, 43, 88, 176, 332, 626, 1170, 2105, 3796, 6820, 11946, 20994, 36244, 62893, 109206, 186726, 320518, 543763, 926873, 1582180, 2671146, 4525866, 7676916, 12896815, 21735625, 36354931, 61037923 ]
[ "nonn" ]
A266727
[ 0, 1, 7, 8, 10, 11, 17, 18, 30, 31, 37, 38, 40, 41, 47, 48, 90, 91, 97, 98, 100, 101, 107, 108, 120, 121, 127, 128, 130, 131, 137, 138, 270, 271, 277, 278, 280, 281, 287, 288, 300, 301, 307, 308, 310, 311, 317, 318, 360,...
[ "nonn" ]
A139135
[ 1, -1, 2, -4, 6, -9, 14, -20, 29, -42, 58, -80, 110, -148, 198, -264, 347, -454, 592, -764, 982, -1257, 1598, -2024, 2554, -3206, 4010, -5000, 6208, -7684, 9484, -11664, 14306, -17501, 21346, -25972, 31526, -38170, 46112, -55588, 66861,...
[ "sign" ]
A292408
[ 1, 5, 46, 669, 11096, 196888, 3596104, 66867564, 1258801076, 23925376862, 458284630844, 8835496339452, 171286387714900, 3336406717216564, 65257828878990780, 1281049596756608000, 25228921286295314000, 498287389997552600000, 9.866927329534882e+21, 1.9583748933896125e+23 ]
[ "nonn" ]
A168970
[ 1, 5, 20, 80, 320, 1280, 5120, 20480, 81920, 327680, 1310720, 5242880, 20971520, 83886080, 335544320, 1342177280, 5368709120, 21474836480, 85899345920, 343597383680, 1374389534720, 5497558138880, 21990232555520, 87960930222070 ]
[ "nonn" ]
A159940
[ 4, 16, 46, 106, 208, 364, 586, 886, 1276, 1768, 2374, 3106, 3976, 4996, 6178, 7534, 9076, 10816, 12766, 14938, 17344, 19996, 22906, 26086, 29548, 33304, 37366, 41746, 46456, 51508, 56914, 62686, 68836, 75376, 82318, 89674, 97456, 105676, 11...
[ "nonn", "easy" ]
A052413
[ 0, 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 60, 61, 62, 63, 64, 66, 67, 68, 69, 7...
[ "base", "easy", "nonn" ]
A285670
[ 1, 2, 4, 5, 6, 8, 9, 10, 11, 12, 14, 15, 16, 18, 19, 20, 22, 23, 24, 25, 26, 28, 29, 30, 32, 33, 34, 36, 37, 38, 40, 41, 42, 44, 45, 46, 47, 48, 50, 51, 52, 54, 55, 56, 58, 59, 60, 61, 62, 64, 65, 66, 68, 69, ...
[ "nonn", "easy" ]
A387987
[ 1, 1, 3, 5, 5, 1, 15, 68, 147, 105, 84, 42, 1, 63, 722, 3098, 4720, 5940, 5112, 2520, 1386, 462, 1, 255, 7100, 58130, 157631, 297458, 374568, 306783, 236544, 137676, 56628, 24024, 6006, 1, 1023, 67820, 1035760, 4697979, 13005203, 2284...
[ "nonn", "tabf" ]
A190413
[ 1, 1245, 189, 189, 85, 85, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, ...
[ "nonn", "easy" ]
A003897
[ 1, 56, 57, 152, 152, 152, 288, 288, 288, 288, 288, 288, 342, 342, 342, 342, 342, 342, 342, 343, 399, 456 ]
[ "nonn", "fini", "full" ]
A071203
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 10, 11, 6, 4, 3, 3, 2, 2, 2, 2, 10, 10, 11, 7, 6, 5, 4, 3, 3, 3, 10, 10, 10, 11, 8, 7, 6, 5, 4, 4, 10, 10, 10, 10, 11, 9, 7, 6, 6, 5, 10, 10, 10, 10, 10, 11, 9, 8, 7, 6, 1...
[ "nonn", "base" ]
A156922
[ 1, 15, 129, 877, 5280, 29658, 159742, 838038, 4323003, 22057825, 111750519, 563535483, 2833221970, 14216330916, 71243079660, 356731958812, 1785306330981, 8931761831331, 44675371382365 ]
[ "easy", "nonn" ]
A235557
[ 2612, 86742, 2481481, 58495571, 1190247008, 21374536916, 348532234129, 5242478364024, 73916754634539, 986934451901485, 12602732098597040, 154990682101091460, 1848012177784521700, 21472048623026033000 ]
[ "nonn" ]
A005933
[ 1, 0, 272, 256, 3058, 2048, 11232, 7168, 32848, 16384, 67936, 32512, 139040, 59392, 217408, 95232, 385266, 147456, 528752, 226048, 819424, 315392, 1075040, 429056, 1572192, 589824 ]
[ "nonn" ]
A222069
[ 4, 6, 5, 2, 5, 7, 6, 1, 3, 3, 0, 9, 2, 5, 8, 6, 3, 5, 6, 1, 0, 5, 0, 4, 0, 6, 2, 4, 1, 1, 2, 9, 3, 6, 8, 5, 9, 9, 4, 6, 5, 7, 7, 5, 1, 3, 9, 6, 5, 3, 6, 1, 5, 7, 7, 4, 3, 5, 6, 6, 4, 4, 4, 5...
[ "nonn", "cons" ]
A252608
[ 614, 725, 1042, 1635, 3022, 5503, 9927, 19165, 36457, 66942, 130253, 250493, 461838, 901547, 1740381, 3212610, 6279191, 12136529, 22411460, 43823953, 84734165, 156496838, 306070623, 591832623, 1093177438, 2138153485, 4134310387 ]
[ "nonn" ]
A236619
[ 0, 1, 2, 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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 0, 1, 2, 0, 0, 2, 2, 1, 1, 0, 1, 1...
[ "nonn" ]
A205454
[ 2, 2, 18, 20, 5, 18, 7, 136, 18, 20, 143, 984, 13, 322, 46365, 2576, 34, 18, 6764, 20, 966, 374, 322, 984, 75025, 52, 54, 2576, 986, 317790, 2178308, 832032, 46365, 34, 17710, 46224, 4181, 6764, 2178306, 2440, 123, 966, 39603, 217...
[ "nonn" ]
A254672
[ 5, 7, 11, 17, 19, 29, 31, 37, 43, 47, 53, 67, 71, 73, 79, 89, 101, 109, 113, 127, 149, 151, 157, 167, 181, 191, 193, 197, 227, 257, 263, 271, 277, 281, 331, 347, 349, 379, 383, 431, 433, 449, 467, 479, 499, 509, 521, 523, ...
[ "nonn" ]
A230924
[ 0, 22428, 2772906, 1509045552, 635678359988, 270258566366420, 115824906242444530, 49485565220035535000, 2.1156805616540924e+22, 9.044496465346856e+24, 3.866495604500081e+27 ]
[ "nonn" ]
A081721
[ 1, 3, 10, 55, 377, 4291, 60028, 1058058, 21552969, 500280022, 12969598086, 371514016094, 11649073935505, 396857785692525, 14596464294191704, 576460770691256300, 24330595997127373000, 1.0929557808170668e+21, 5.206367515202116e+22, 2.621440000054016e+24 ]
[ "nonn" ]
A134919
[ 1, 3, 6, 10, 14, 19, 25, 32, 38, 46, 54, 62, 71, 81, 91, 101, 112, 123, 135, 147, 159, 172, 186, 199, 213, 228, 243, 258, 273, 289, 305, 322, 339, 356, 374, 392, 410, 429, 448, 467, 487, 507, 527, 548, 569, 590, 612, 633, ...
[ "nonn", "easy" ]
A195413
[ 7, 7, 7, 7, 7, 3, 1, 7, 7, 7, 5, 1, 2, 1, 1, 5, 6, 6, 8, 6, 8, 4, 0, 3, 3, 8, 9, 2, 2, 1, 5, 4, 7, 4, 5, 8, 6, 3, 0, 2, 5, 5, 4, 4, 9, 2, 3, 1, 4, 4, 4, 0, 4, 7, 4, 0, 9, 4, 4, 8, 6, 0, 5, 7...
[ "nonn", "cons" ]
A043875
[ 17476, 17478, 17479, 17480, 17481, 17483, 17484, 17485, 17486, 17505, 17506, 17507, 17508, 17510, 17511, 17516, 17517, 17518, 17521, 17522, 17523, 17524, 17526, 17527, 17528, 17529, 17531, 17540, 17542, 17543 ]
[ "nonn", "base" ]
A353366
[ 1, -1, -1, 0, -2, 1, -1, 0, -2, 2, -2, 0, -4, 1, 3, 0, -5, 2, -3, 0, -4, 2, -2, 0, -3, 4, 1, 0, -8, -3, -1, 0, -5, 5, -1, 0, -10, 3, 5, 0, -11, 4, -6, 0, -4, 2, -2, 0, -12, 3, 3, 0, -14, -1, 4, 0, -9, 8...
[ "sign" ]
A315146
[ 1, 6, 10, 13, 18, 21, 26, 32, 40, 46, 50, 49, 54, 55, 62, 68, 76, 84, 90, 87, 94, 91, 98, 104, 112, 120, 126, 123, 134, 129, 138, 142, 148, 156, 162, 157, 170, 165, 178, 182, 188, 194, 198, 191, 206, 199, 214, 220, 228, ...
[ "nonn" ]
A240486
[ 0, 1, 0, 1, 2, 2, 4, 5, 8, 10, 16, 19, 29, 36, 51, 63, 89, 108, 148, 182, 242, 297, 390, 475, 615, 750, 955, 1161, 1466, 1774, 2217, 2679, 3316, 3994, 4911, 5892, 7197, 8613, 10451, 12470, 15055, 17905, 21508, 25513, 30503, 36...
[ "nonn", "easy" ]
A272270
[ 12, 13, 14, 15, 28, 29, 30, 31, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 76, 77, 78, 79, 92, 93, 94, 95, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 12...
[ "nonn" ]
A016843
[ 2187, 823543, 19487171, 170859375, 893871739, 3404825447, 10460353203, 27512614111, 64339296875, 137231006679, 271818611107, 506623120463, 897410677851, 1522435234375, 2488651484819, 3938980639167, 6060711605323, 9095120158391, 13348388671875, 19203908986159 ]
[ "nonn", "easy" ]
A058123
[ 1, 2, 2, 5, 7, 6, 19, 37, 44, 26, 132, 216, 351, 326, 135, 3107, 1780, 3093, 4157, 2961, 875, 623615, 32652, 33445, 53145, 56020, 30395, 6749, 1834861133, 4665709, 600027, 754315, 1007475, 822176, 348692, 60601, 52976551026562, 12710266442, ...
[ "nonn", "tabl", "hard" ]
A138935
[ 3, 7, 10, 11, 12, 13, 24, 28, 47, 48, 49, 56, 57, 88, 90, 92, 108, 110, 116, 120, 127, 134, 141, 149, 161, 181, 198, 202, 206, 236, 248, 288, 357, 384, 420, 458, 500, 530, 536, 619, 620, 694, 798, 897, 929, 981, 992, 1064,...
[ "nonn" ]
A241268
[ 2, 4, 5, 10, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 33, 34, 36, 37, 39, 41, 42, 43, 44, 45, 46, 47, 49, 51, 52, 53, 55, 56, 57, 59, 60, 61, 62, 63, 64, 66, 67, 68, 69, 70, 71, 7...
[ "nonn", "easy" ]
A031129
[ 10, 29, 76, 161, 322, 588, 1042, 1751, 2875, 4570, 7127, 10859, 16305, 24050, 35039, 50354, 71608, 100696, 140348, 193783, 265504, 360888, 487213, 653242, 870612, 1153321, 1519657, 1991688, 2597761, 3372106, 4358197, 5608417 ]
[ "nonn" ]
A161809
[ 1, 3, 6, 12, 21, 33, 51, 75, 105, 147, 201, 267, 354, 462, 591, 753, 948, 1176, 1455, 1785, 2166, 2622, 3153, 3759, 4470, 5286, 6207, 7275, 8490, 9852, 11415, 13179, 15144, 17376, 19875, 22641, 25761, 29235, 33063, 37353, 42105, 47319...
[ "nonn" ]
A169637
[ 1, 1, 1, 4, 20, 60, 420, 3360, 15120, 151200, 831600, 3326400, 43243200, 302702400, 1513512000, 24216192000, 411675264000, 3705077376000, 70396470144000, 703964701440000, 14783258730240000, 162615846032640000, 1246721486250240000, 7480328917501440000 ]
[ "nonn" ]
A160879
[ 0, 3, 126, 3255, 72540 ]
[ "nonn" ]
A239690
[ 2, 3, 2, 4, 5, 4, 2, 4, 5, 5, 7, 4, 5, 7, 8, 5, 8, 7, 4, 5, 4, 7, 5, 5, 4, 5, 7, 8, 7, 5, 10, 5, 5, 7, 5, 7, 7, 7, 8, 8, 8, 7, 11, 4, 5, 7, 7, 10, 8, 7, 8, 11, 7, 11, 2, 5, 5, 7, 4, 5, 7, 5, 7...
[ "nonn", "base", "hear" ]
A370961
[ 1, 6, 426, 122190, 90768378, 138779942046, 379578822373866, 1689637343582548500, 1.1434884125767376e+22, 1.1176507280855485e+26, 1.515592947854932e+30, 2.760971092480687e+34, 6.580439929340275e+38 ]
[ "nonn" ]
A266182
[ 1, 2, 88, 7768, 4027960, 2437859280, 3971117183616, 6584104013616000 ]
[ "nonn" ]
A156815
[ 1, 0, 1, 0, 1, 2, 0, 2, 6, 6, 0, 6, 28, 36, 24, 0, 24, 180, 300, 240, 120, 0, 120, 1488, 3240, 3120, 1800, 720, 0, 720, 15120, 43344, 50400, 33600, 15120, 5040, 0, 5040, 182880, 695520, 979776, 756000, 383040, 141120, 40320, 0...
[ "nonn", "tabl" ]
A045520
[ 0, 1, 5, 15, 19, 22, 25, 27, 35, 37, 42, 45, 48, 51, 55, 59, 63, 64, 69, 70, 76, 77, 78, 88, 89, 90, 91, 92, 93, 94, 95, 104, 105, 106, 107, 108, 109, 110, 111, 112, 123, 124, 125, 132, 133, 134, 140, 141, 146, 147, ...
[ "nonn", "base" ]
A216471
[ 1, 3, 271, 61535, 50812751, 21358519, 237419801716063, 1135029771535910700, 8.97295941293521e+21, 91620671606331850000, 1.5994686511970929e+30, 7.026497823120302e+29, 9.785579191862907e+38 ]
[ "nonn" ]
A288721
[ 1, 7, 32, 296, 5744, 227080, 18084720, 2883751336, 916819998880, 579403471332808, 726271886301488400, 1.8027171279120195e+21, 8.849500619057759e+24, 8.583055682731253e+28, 1.643431935596454e+33, 6.208217856235722e+37 ]
[ "nonn" ]
A027543
[ 163, 4719, 64966, 610166, 4546137, 29120349, 168301828, 905468700, 4631682463, 22861603067, 110036539458, 520325868354, 2430026294149, 11249283423801, 51745956440320, 236889852817832, 1080311924210379, 4910417209821015, 22252163061096190, 100544806298594190 ]
[ "nonn" ]
A287069
[ 2, 9, 13, 15, 20, 22, 25, 32, 34, 37, 42, 49, 53, 55, 58, 63, 70, 72, 79, 83, 85, 90, 92, 95, 100, 107, 109, 116, 120, 122, 125, 132, 136, 138, 143, 145, 148, 155, 157, 160, 165, 172, 174, 181, 185, 187, 190, 197, 201, ...
[ "nonn", "easy" ]
A349914
[ 2, 0, 0, 1, 0, 8, 0, 1, 16, 12, 0, 4, 0, 16, 48, 1, 0, 10, 0, 6, 64, 24, 0, 4, 36, 28, 40, 8, 0, 0, 0, 1, 96, 36, 96, 13, 0, 40, 112, 6, 0, 0, 0, 12, 60, 48, 0, 4, 64, 26, 144, 14, 0, 40, 144, 8, 160, 6...
[ "nonn" ]
A103870
[ 1, 4, 44, 580, 8428, 129504, 2063996, 33752576, 562597100, 9516705808, 162878088544, 2814359798936, 49015445212156, 859377160206400, 15153426645082560, 268521098568718080, 4778754834452368000, 85368326032573040000, 1.530167828649835e+21, 2.750970398046594e+22 ]
[ "nonn" ]