id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A266534
[ 0, 1, 2, 3, 6, 7, 10, 13, 16, 21, 24, 29, 36, 37, 40, 43, 46, 53, 58, 65, 74, 83, 96, 107, 120, 133, 136, 143, 150, 157, 168, 179, 190, 209, 226, 247, 258, 271, 286, 299, 314, 327, 334, 349, 364, 381, 406, 417, 434, 455, 470, 493, 514, 533, 562, 583, 608, 631, 646, 661, 680, 703, 736, 761, 782, 807, 836, 857, 892, 927 ]
[ "nonn" ]
A334013
[ 2, 140, 102424, 43322844421220 ]
[ "nonn", "hard", "more" ]
A303801
[ 1, 5, 9, 38, 100, 316, 1217, 8004, 52464, 501170, 4720512, 60221097, 817581575 ]
[ "nonn" ]
A375961
[ 1, 3, 1, 2, 1, 5, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 7, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 5, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 6, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 5, 1, 2, 1, 3, 1, 2, 1, 4, 1, 2, 1, 3, 1, 2, 1, 9, 1 ]
[ "nonn", "easy" ]
A283612
[ 1, 1, 4, 13, 57, 252, 1322, 7361, 45057, 294392, 2054394, 15172872, 118175823, 966300054, 8268640847, 73825951226, 686049132714, 6620780612228, 66224775509130, 685372810735380, 7327272883303533 ]
[ "nonn", "more" ]
A336080
[ 4, 7, 6, 0, 6, 7, 7, 0, 7, 3, 3, 9, 6, 2, 4, 5, 6, 8, 4, 0, 3, 7, 4, 8, 9, 8, 3, 1, 5, 3, 9, 3, 1, 6, 3, 5, 9, 4, 8, 1, 2, 3, 4, 6, 2, 1, 0, 6, 8, 4, 9, 2, 3, 5, 7, 6, 3, 7, 4, 9, 0, 2, 3, 1, 4, 4, 4, 7, 2, 0, 5, 3, 3, 8, 3, 1, 8, 3, 3, 0, 8, 8, 8, 5, 8, 9 ]
[ "nonn", "cons" ]
A035250
[ 1, 2, 2, 2, 2, 2, 3, 2, 3, 4, 4, 4, 4, 3, 4, 5, 5, 4, 5, 4, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 8, 7, 7, 8, 8, 9, 10, 9, 9, 10, 10, 10, 10, 9, 10, 10, 10, 9, 10, 10, 11, 12, 12, 12, 13, 13, 14, 14, 14, 13, 13, 12, 12, 13, 13, 14, 14, 13, 14, 15, 15, 14, 14, 13, 14, 15 ]
[ "nonn" ]
A111583
[ 1, 4, 14, 38, 93, 202, 400, 736, 1260, 2046, 3158, 4676, 6672, 9231, 12441, 16353, 21130, 26779, 33463, 41379, 50568, 61238, 73726, 88348, 104915, 124266, 146833, 172020, 200771, 233777, 270598, 310894, 356778, 407734, 462317, 523410, 591008 ]
[ "nonn" ]
A098990
[ 3, 6, 7, 4, 6, 4, 3, 9, 6, 6, 0, 1, 1, 3, 2, 8, 7, 7, 8, 9, 9, 5, 6, 7, 6, 3, 0, 9, 0, 8, 4, 0, 2, 9, 4, 1, 1, 6, 7, 7, 7, 9, 7, 5, 8, 8, 7, 7, 9, 4, 3, 7, 3, 2, 8, 3, 1, 2, 2, 0, 5, 2, 2, 0, 1, 7, 6, 3, 7, 9, 8, 6, 7, 0, 4, 4, 8, 2, 8, 3, 6, 0, 4, 1, 7, 4, 5, 4, 7, 6, 4, 5, 7, 8, 8, 0, 1, 9, 0, 1, 1, 3, 7, 5, 2 ]
[ "cons", "nonn" ]
A388106
[ 0, 4, 9, 8, 7, 3, 6, 8, 3, 3, 5, 9, 6, 3, 3, 4, 2, 4, 9, 9, 1, 6, 9, 2, 8, 4, 8, 6, 3, 5, 2, 7, 6, 2, 9, 1, 4, 2, 1, 6, 2, 2, 6, 9, 2, 8, 7, 0, 7, 2, 4, 5, 3, 3, 4, 8, 8, 4, 7, 7, 1, 2, 6, 5, 5, 1, 3, 5, 7, 7, 4, 0, 1, 2, 2, 7, 3, 4, 9, 8, 3, 8, 6, 1, 7, 5, 8 ]
[ "nonn", "cons" ]
A172279
[ 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 2, 6, 2, 1, 1, 3, 10, 5, 1, 1, 1, 2, 8, 20, 8, 2, 1, 1, 2, 11, 35, 18, 5, 1, 1, 1, 1, 6, 28, 70, 28, 6, 1, 1, 1, 1, 8, 42, 126, 63, 17, 4, 1, 1, 1, 1, 5, 24, 105, 252, 105, 24, 5, 1, 1, 1, 1, 6, 33, 165, 462, 231, 66, 17, 4, 1, 1, 1, 1, 4, 22, 99, 396, 924, 396, 99, 22, 4, 1, 1 ]
[ "nonn", "tabl" ]
A019054
[ 3, 6, 21, 159, 1002, 5426, 32678, 213283, 1389400, 9052394, 60114080, 406302200, 2775970886, 19129099772, 132872261760 ]
[ "nonn", "more" ]
A129595
[ 1, 2, 2, 3, 4, 3, 4, 9, 9, 4, 5, 8, 6, 8, 5, 6, 25, 27, 27, 25, 6, 7, 18, 15, 16, 15, 18, 7, 8, 49, 12, 125, 125, 12, 49, 8, 9, 16, 35, 54, 10, 54, 35, 16, 9, 10, 27, 81, 343, 45, 45, 343, 81, 27, 10, 11, 50, 18, 32, 21, 24, 21, 32, 18, 50, 11, 12, 121, 30, 81, 625, 175 ]
[ "nonn", "tabl" ]
A187714
[ 7148695169714209000, 17968583418362170000, 26363076126393717000, 57376760867272385000, 67950587841687765000, 73873959473901570000, 81055172741266750000, 96217896533288100000, 104173338506128100000 ]
[ "nonn" ]
A058263
[ 1, 2, 2, 2, 2, 4, 2, 2, 2, 2, 6, 4, 2, 2, 2, 2, 2, 6, 2, 2, 6, 2, 2, 8, 4, 2, 2, 2, 4, 14, 2, 2, 2, 2, 2, 6, 6, 2, 2, 2, 2, 10, 2, 4, 2, 6, 6, 2, 2, 4, 2, 2, 10, 2, 2, 2, 2, 6, 4, 2, 2, 2, 2, 2, 4, 2, 6, 2, 2, 4, 2, 2, 6, 6, 2, 2, 4, 4, 8, 2, 2, 10, 2, 6, 2, 2, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 4, 2, 18, 6, 2, 2 ]
[ "nonn" ]
A147976
[ -3, -5, -5, 25, 271, 1825, 10735, 59425, 318271, 1670785, 8656975, 44454625, 226827871, 1151991745, 5830280815, 29429454625, 148249811071, 745630312705, 3745590106255, 18797445635425, 94264432179871, 472428649241665 ]
[ "sign", "easy" ]
A051698
[ 2, 2, 3, 2, 3, 3, 5, 5, 7, 7, 11, 13, 11, 11, 13, 13, 17, 19, 17, 17, 19, 19, 23, 19, 23, 23, 23, 29, 29, 31, 29, 29, 31, 31, 31, 37, 37, 41, 37, 37, 41, 43, 41, 41, 43, 43, 47, 43, 47, 47, 47, 53, 53, 47, 53, 53, 53, 59, 59, 61, 59, 59, 61, 61, 61, 67, 67, 71, 67, 67, 71, 73 ]
[ "nonn", "easy" ]
A373347
[ 3, 5, 7, 9, 11, 13, 14, 15, 17, 19, 21, 22, 23, 25, 26, 27, 29, 30, 31, 33, 35, 37, 38, 39, 41, 42, 43, 45, 46, 47, 49, 50, 51, 53, 54, 55, 57, 58, 59, 60, 61, 62, 63, 65, 67, 69, 70, 71, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89, 90, 91, 92, 93, 94, 95, 97, 98, 99 ]
[ "nonn", "easy", "base" ]
A336882
[ 1, 3, 5, 15, 7, 21, 35, 105, 9, 27, 45, 135, 63, 189, 315, 945, 11, 33, 55, 165, 77, 231, 385, 1155, 99, 297, 495, 1485, 693, 2079, 3465, 10395, 13, 39, 65, 195, 91, 273, 455, 1365, 117, 351, 585, 1755, 819, 2457, 4095, 12285, 143, 429, 715, 2145, 1001 ]
[ "nonn" ]
A303151
[ 0, 1, 10, 12, 11, 2, 13, 3, 14, 15, 16, 4, 17, 18, 5, 6, 19, 7, 8, 101, 9, 20, 21, 31, 22, 23, 41, 51, 24, 25, 26, 100, 27, 121, 28, 29, 30, 61, 71, 32, 33, 34, 35, 102, 36, 81, 37, 38, 39, 131, 40, 42, 43, 44, 91, 45, 46, 47, 210, 48, 49, 50, 212, 110, 103, 52, 53, 54, 213, 211, 55, 141, 56, 214 ]
[ "nonn", "base" ]
A390420
[ 221157, 746484, 991204, 2230209, 4665525, 6195025, 6855867, 9144429, 12142249, 21897084, 22581141, 23141004, 23224180, 23555244, 23699724, 25067180, 25988180, 26400020, 27785884, 27812764, 27978764, 28921244, 29520364, 29658404, 29883164, 29953268, 29976644, 29983921 ]
[ "nonn", "new" ]
A296105
[ 1, 2, 5, 25, 157, 1325, 14358, 199763, 3549001, 80673244, 2352747542, 88240542454, 4261209044877, 264988507673267, 21207485269909944, 2182146922863398100 ]
[ "nonn", "more" ]
A246440
[ 1, 2, 3, 7, 8, 9, 14, 15, 16, 20, 21, 22, 26, 27, 28, 32, 33, 34, 35, 39, 40, 41, 45, 46, 47, 51, 52, 53, 58, 59, 60, 64, 65, 66, 70, 71, 72, 76, 77, 78, 79, 83, 84, 85, 89, 90, 91, 95, 96, 97, 102, 103, 104, 108, 109, 110, 114, 115, 116, 120, 121, 122, 123 ]
[ "nonn", "easy" ]
A325593
[ 1, 6, 20, 30, 56, 60, 90, 105, 120, 210, 252, 360, 420, 462, 495, 504, 560, 630, 720, 756, 840, 990, 1260, 1320, 1365, 1540, 1680, 1716, 1980, 2520, 2970, 3003, 3360, 3960, 4290, 4620, 5040, 5460, 6006, 6435, 7140, 7560, 7920, 8190, 9240, 10080, 10296, 10626 ]
[ "nonn" ]
A119217
[ 12, 132, 947, 1332, 3867, 13332, 133332, 299492, 1222692, 1333332, 13333332, 133333332, 1333333332, 3944306652, 13333333332, 122020365307, 133333333332, 394329425347, 988724307827, 1333333333332, 12528986215052 ]
[ "nonn", "base" ]
A048134
[ 0, 3, 6, 13, 22, 40, 55, 88, 118, 163, 205, 280, 334, 436, 517, 625, 733, 901, 1018, 1225, 1381, 1591, 1786, 2083, 2287, 2617, 2887, 3238, 3544, 4006, 4306, 4831, 5239, 5749, 6205, 6817, 7267, 8005, 8572, 9280, 9880, 10780, 11374, 12361 ]
[ "nonn", "nice", "easy" ]
A293109
[ 1, 0, 1, 0, 2, 1, 0, 3, 3, 1, 0, 5, 10, 4, 1, 0, 7, 24, 17, 5, 1, 0, 11, 62, 58, 26, 6, 1, 0, 15, 140, 193, 107, 37, 7, 1, 0, 22, 329, 603, 439, 178, 50, 8, 1, 0, 30, 725, 1852, 1663, 852, 275, 65, 9, 1, 0, 42, 1631, 5539, 6283, 3767, 1500, 402, 82, 10, 1 ]
[ "nonn", "tabl" ]
A265151
[ 11, 56, 169, 744, 769, 5076, 5625, 43524, 390625, 1827776, 2562500, 8273225, 37136225, 38371001, 43037561, 258421444, 792669636, 2928667041, 38512058944, 260125180889, 405701529401, 688085041025, 5890084946609, 22508111494025, 64017148660004, 537387232526336 ]
[ "nonn", "base" ]
A162043
[ 2, 5, 17, 86, 698, 9551, 226592, 9471845, 705154187, 93580638024, 21617123994739, 8359355039654246, 5068693922149272000 ]
[ "nonn" ]
A119836
[ 1, -2, 2, 0, -24, 12, 0, 0, -360, 120, 0, 0, 0, -6720, 1680, 0, 0, 0, 0, -151200, 30240, 0, 0, 0, 0, 0, -3991680, 665280, 0, 0, 0, 0, 0, 0, -121080960, 17297280, 0, 0, 0, 0, 0, 0, 0, -4151347200, 518918400, 0, 0, 0, 0, 0, 0, 0, 0, -158789030400, 17643225600, 0, 0, 0, 0, 0, 0, 0, 0, 0, -6704425728000, 670442572800 ]
[ "easy", "sign", "tabl" ]
A304118
[ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 7, 1, 1, 1, 1 ]
[ "nonn" ]
A257236
[ 2, 0, 3, 8, 5, 1, 3, 1, 9, 8, 1, 2, 4, 5, 0, 6, 1, 7, 6, 8, 5, 7, 1, 3, 7, 4, 2, 3, 5, 4, 3, 1, 0, 2, 4, 8, 5, 1, 8, 5, 6, 2, 2, 1, 0, 9, 3, 0, 6, 2, 3, 9, 3, 4, 9, 9, 1, 0, 6, 8, 1, 4, 2, 7, 2, 1, 9, 6, 2, 5, 8, 9, 1, 1, 4, 2, 8, 1, 7, 5, 4, 9, 6, 2, 3, 5, 8, 7, 5, 1, 6, 8, 2, 9, 8, 4, 2 ]
[ "nonn", "easy", "cons" ]
A371600
[ 1, 60, 2160, 12600, 18480, 77760, 180180, 216000, 453600, 665280, 2646000, 2799360, 3880800, 7776000, 10810800, 16329600, 16336320, 23950080, 32016600, 45360000, 66528000, 95256000, 100776960, 139708800, 214414200, 232792560, 279936000, 389188800, 555660000, 587865600 ]
[ "nonn" ]
A152323
[ 1, 2, 6, 24, 104, 592, 3384, 22544, 172448, 1468904, 13506934, 134335588, 1414062686, 16456846630, 203601501758, 2712671491944 ]
[ "nonn" ]
A338885
[ 2, 3, 4, 5, 4, 5, 7, 6, 9, 10, 5, 7, 8, 11, 13, 7, 8, 10, 13, 16, 17, 6, 9, 11, 12, 15, 19, 21, 6, 8, 10, 11, 14, 17, 22, 25, 26, 7, 9, 10, 11, 13, 14, 16, 17, 19, 25, 29, 31, 9, 12, 13, 15, 18, 20, 21, 28, 33, 36, 37, 7, 8, 11, 12, 13, 14, 15, 17, 20, 22, 23 ]
[ "nonn", "tabf" ]
A324232
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 6, 232, 124380, 835457795 ]
[ "nonn", "more" ]
A041577
[ 1, 2, 69, 140, 4829, 9798, 337961, 685720, 23652441, 47990602, 1655332909, 3358656420, 115849651189, 235057958798, 8107820250321, 16450698459440, 567431567871281, 1151313834202002, 39712101930739350, 80575517695680700, 2779279703583883300 ]
[ "nonn", "frac", "easy" ]
A046947
[ 1, 3, 22, 333, 355, 103993, 104348, 208341, 312689, 833719, 1146408, 4272943, 5419351, 80143857, 165707065, 245850922, 411557987, 1068966896, 2549491779, 6167950454, 14885392687, 21053343141, 1783366216531, 3587785776203 ]
[ "nonn", "nice" ]
A042992
[ 2, 3, 5, 7, 13, 17, 19, 23, 31, 37, 41, 47, 59, 61, 73, 79, 83, 89, 97, 101, 103, 107, 131, 139, 149, 157, 163, 167, 173, 181, 191, 199, 223, 227, 229, 233, 241, 251, 257, 269, 271, 283, 293, 307, 311, 313, 317, 331, 349, 353, 359, 367, 373, 383, 397, 401 ]
[ "nonn", "easy" ]
A088404
[ 1, 10, 55, 100, 505, 550, 1000, 5005, 5050, 5500, 10000, 50005, 50050, 50500, 55000, 100000, 500005, 500050, 500500, 505000, 550000, 1000000, 5000005, 5000050, 5000500, 5005000, 5050000, 5500000, 10000000, 50000005, 50000050, 50000500 ]
[ "nonn", "easy" ]
A234570
[ 1, 7, 91, 1470, 26565, 514206, 10426416, 218618940, 4701550770, 103134123820, 2298706645235, 51909777109596, 1185134654128425, 27309853977084000, 634361032466470700, 14837590383963666000, 349163392095422800000, 8.260872214482785e+21, 1.963807522601553e+23 ]
[ "nonn" ]
A231609
[ 3, 7, 5, 23, 13, 11, 89, 31, 19, 17, 139, 359, 47, 37, 29, 199, 181, 389, 53, 43, 41, 113, 211, 241, 401, 61, 67, 59, 1831, 293, 467, 283, 449, 73, 79, 71, 523, 1933, 317, 509, 337, 479, 83, 97, 101, 887, 1069, 2113, 773, 619, 409, 491, 131, 103, 107 ]
[ "nonn", "tabl", "look" ]
A096558
[ 0, 38, 7719, 21238, 2437, 8855, 11797, 8365, 32285, 10450, 30612, 5853, 28100, 1142, 281, 20537, 15921, 8945, 26285, 2997, 14680, 20976, 31891, 21655, 25906, 18457, 1323, 28881, 2240, 9725, 32278, 2446, 590, 840, 18587, 16907, 21237, 23611, 12617 ]
[ "nonn", "easy" ]
A129868
[ 0, 5, 27, 119, 495, 2015, 8127, 32639, 130815, 523775, 2096127, 8386559, 33550335, 134209535, 536854527, 2147450879, 8589869055, 34359607295, 137438691327, 549755289599, 2199022206975, 8796090925055, 35184367894527, 140737479966719, 562949936644095 ]
[ "nonn", "base", "easy" ]
A138729
[ 7, 25, 98, 1167, 4650, 30930, 1111860, 31100895, 13812610, 894570642, 89419472100, 1311049104750, 47185076099700, 350440263072900, 4578242813103960, 4119778157653533000, 16476927824724617000, 124478128839848030000, 4.032691416945554e+22 ]
[ "nonn" ]
A295281
[ 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 4, 1, 0, 1, 1, 1, 3, 1, 1, 1, 1, 1, 4, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 1, 1, 1, 0, 1, 4, 1, 1, 1, 4, 1, 6, 1, 1, 1, 1, 1, 4, 1, 1, 0, 1, 1, 9, 1, 1, 1, 1, 1, 9, 1 ]
[ "nonn" ]
A069490
[ 1373, 3137, 3797, 6131, 6173, 6197, 9719, 11311, 11317, 17971, 31379, 61379, 71971, 113131, 113173, 113797, 131311, 131317, 131797, 179719, 317971, 431311, 431797, 617971, 1131131, 1131379, 1311311, 1313797, 1317971, 3131137, 3131311 ]
[ "nonn" ]
A280575
[ 1, 5, 85, 2625, 119225, 7209725, 547774525, 50342086425, 5448583486625, 680816992367125, 96720369562897120, 15433474653279056000, 2.738894920523847e+21, 5.361655216948967e+23, 1.1498601440429908e+26, 2.6857525461337376e+28, 6.797751676147998e+30, 1.8562233123224887e+33, 5.447288808375273e+35, 1.7120946676353566e+38 ]
[ "nonn" ]
A300047
[ 1, 1, 8, 270, 35472, 18318288, 37611139104, 308338698386160, 10105807430398163000, 1.3246693053737896e+24, 6.945201455368685e+29, 1.4565212578919152e+36, 1.2218201898131116e+43, 4.099749713722159e+50 ]
[ "nonn" ]
A017435
[ 177147, 4049565169664, 2384185791015625, 131621703842267140, 2472159215084012500, 24986644000165536000, 168787390185178430000, 858993459200000000000, 3.543686674874778e+21, 1.2433743083946522e+22 ]
[ "nonn", "easy" ]
A381275
[ 1, 1, 1, -11, -47, -39, 1681, 10893, -13215, -851471, -5515679, 34375397, 887687857, 3982645577, -85350572943, -1466457337859, -659043831871, 270733024430305, 3181606182917569, -24432689736388396, -1076204061663657900, -6834631528147762000, 221729710998069150000 ]
[ "sign" ]
A120062
[ 1, 5, 13, 18, 15, 45, 24, 45, 51, 52, 26, 139, 31, 80, 110, 89, 33, 184, 34, 145, 185, 103, 42, 312, 65, 96, 140, 225, 36, 379, 46, 169, 211, 116, 173, 498, 38, 123, 210, 328, 44, 560, 60, 280, 382, 134, 64, 592, 116, 228, 230, 271, 47, 452, 229, 510, 276, 134, 54 ]
[ "nonn", "look" ]
A187579
[ 3, 4, 8, 12, 13, 17, 18, 19, 23, 27, 28, 32, 36, 37, 41, 42, 43, 47, 51, 52, 56, 57, 58, 62, 66, 67, 71, 75, 76, 80, 81, 82, 86, 90, 91, 95, 99, 100, 104, 105, 106, 110, 114, 115, 119, 120, 121, 125, 129, 130, 134, 138, 139, 143, 144, 145, 149, 153, 154, 158, 159, 160, 164, 168, 169, 173, 177, 178, 182, 183, 184, 188, 192, 193, 197, 201, 202, 206, 207, 208, 212, 216, 217 ]
[ "nonn" ]
A183540
[ 73, 3996, 146315, 12593728, 299794777 ]
[ "nonn" ]
A291148
[ 1, -1, 0, -1, 0, -1, -1, -1, -2, -2, -4, -4, -7, -9, -13, -19, -25, -38, -51, -75, -104, -149, -211, -298, -426, -600, -857, -1211, -1724, -2444, -3471, -4930, -6995, -9940, -14104, -20038, -28444, -40397, -57362, -81453, -115675, -164250, -233262, -331227 ]
[ "sign" ]
A239842
[ 5, 11, 31, 37, 47, 53, 97, 163, 167, 509, 877, 1061, 2027, 2293, 3011, 6803, 8423, 13627, 20047, 28411, 50221, 50993, 71453, 152809, 272141, 505823, 1353449 ]
[ "more", "nonn", "hard" ]
A225450
[ 7, 6, 3, 4, 0, 1, 9, 6, 8, 0, 7, 7, 0, 7, 5, 0, 6, 8, 6, 0, 5, 9, 2, 5, 6, 3, 2, 1, 3, 5, 3, 1, 8, 2, 2, 8, 6, 1, 1, 9, 8, 2, 1, 5, 3, 9, 6, 9, 8, 9, 9, 7, 1, 9, 7, 5, 6, 5, 1, 7, 0, 7, 6, 4, 4, 5, 8, 6, 4, 6, 8, 9, 2, 9, 8, 8, 3, 2, 0, 0, 1, 8, 2, 7, 9, 1, 5, 8, 6, 8, 2, 5, 6, 4, 6, 2, 9, 3, 5, 7 ]
[ "nonn", "base" ]
A029246
[ 1, 0, 0, 1, 1, 1, 1, 1, 3, 2, 2, 3, 4, 4, 4, 5, 7, 6, 7, 8, 10, 10, 10, 12, 15, 14, 15, 17, 20, 20, 21, 23, 27, 27, 28, 31, 35, 35, 37, 40, 45, 45, 47, 51, 56, 57, 59, 63, 70, 70, 73, 78, 84, 86, 89, 94, 102, 103, 107, 113 ]
[ "nonn", "easy" ]
A051560
[ 0, 1, 17, 242, 3382, 48504, 725592, 11393808, 188204400, 3270729600, 59753750400, 1146140409600, 23046980025600, 485075533132800, 10669304848204800, 244861798361241600, 5854837379724749000 ]
[ "easy", "nonn" ]
A289188
[ 2, 2, 3, 4, 5, 6, 7, 8, 8, 9, 10, 11, 12, 13, 14, 14, 15, 16, 17, 18, 18, 19, 20, 21, 22, 23, 23, 24, 25, 26, 27, 27, 28, 29, 30, 31, 31, 32, 33, 34, 35, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45, 46, 47, 47, 48, 49, 50, 51, 51 ]
[ "nonn", "easy" ]
A388026
[ 120, 672, 720, 900, 1344, 1440, 2352, 2688, 3528, 4680, 5280, 5376, 5616, 6336, 7488, 10752, 16416, 17100, 17472, 21504, 21888, 24600, 26496, 27144, 32832, 33120, 33300, 34848, 35520, 36504, 43008, 44064, 49728, 50112, 51360, 59616, 65664, 65856, 68112, 70848, 74880, 75852, 81984, 84480, 84720, 86016, 94848, 98784 ]
[ "nonn" ]
A284032
[ 1, 256, 12866, 354106, 7107302, 117437746, 1701740006, 22447207906, 276054834902, 3216941445106, 35934231683846, 388027036757506, 4076344795442102, 41866470995832460, 422006961657805300, 4187561159054336000, 41007540680799210000, 397101660070601100000 ]
[ "nonn" ]
A257717
[ 5, 11, 31, 17, 23, 67, 41, 59, 73, 47, 103, 83, 97, 127, 149, 157, 137, 167, 283, 191, 179, 109, 211, 227, 313, 233, 197, 331, 241, 257, 379, 347, 307, 367, 389, 277, 353, 401, 439, 269, 509, 499, 419, 449, 571, 431, 487, 563, 461, 547, 523, 587, 599, 661, 607, 761, 631, 677 ]
[ "nonn" ]
A025729
[ 1, 3, 6, 10, 16, 23, 31, 41, 52, 64, 77, 92, 108, 125, 144, 164, 185, 207, 231, 256, 282, 310, 339, 369, 401, 434, 468, 503, 540, 578, 617, 658, 700, 743, 787, 833, 880, 928, 978, 1029, 1081, 1134, 1189, 1245, 1302, 1361, 1421, 1482, 1545, 1609, 1674, 1740, 1808 ]
[ "nonn", "easy", "changed" ]
A113484
[ 4, 9, 4, 9, 6, 25, 8, 9, 10, 21, 12, 25, 14, 15, 16, 21, 18, 25, 20, 21, 22, 25, 24, 25, 26, 27, 28, 33, 30, 49, 32, 33, 34, 35, 36, 49, 38, 39, 40, 49, 42, 55, 44, 45, 46, 49, 48, 49, 50, 51, 52, 55, 54, 55, 56, 57, 58, 63, 60, 77, 62, 63, 64, 65, 66, 85, 68, 69, 70, 81, 72, 77 ]
[ "nonn" ]
A214888
[ 2, 3, 13, 47, 79, 101, 113, 157, 167, 179, 211, 223, 233, 277, 311, 409, 421, 431, 443, 487, 509, 541, 563, 607, 619, 641, 673, 739, 751, 761, 773, 827, 839, 883, 937, 971, 1069, 1091, 1103, 1201, 1213, 1223, 1279, 1289, 1301, 1367, 1399, 1433, 1487, 1499 ]
[ "nonn" ]
A316783
[ 4, 5, 6, 11, 14, 15, 18, 19, 25, 33, 43, 57, 59, 78, 79, 105, 135, 139, 185, 187, 191, 246, 247, 249, 254, 255, 329, 338, 339, 359, 427, 438, 439, 443, 450, 451, 478, 479, 569, 585, 590, 591, 601, 636, 637, 638, 758, 759, 767, 779, 786, 787, 801, 849, 850, 851 ]
[ "nonn" ]
A323063
[ 0, 0, 0, 0, 1, 21, 282, 3102, 30583, 282368, 2494567 ]
[ "nonn", "more" ]
A327687
[ 1, 4, 12, 18, 38, 62, 78, 90, 114, 174, 184, 208, 236, 284, 324, 348, 384, 408, 426, 486, 502, 532, 580, 604, 704, 788, 860, 908, 922, 1042, 1072, 1120, 1160, 1196, 1276, 1300, 1376, 1394, 1450, 1510, 1550, 1598, 1686, 1716, 1836, 1884, 1916, 1940, 2052, 2352, 2424, 2508, 2616, 2688, 2708 ]
[ "nonn" ]
A152939
[ 29153, 109649, 486385, 2024613, 8634049, 36481021, 154687133, 655020765, 2775107981, 11754906113, 49795616797, 210935942361, 893541701545, 3785099002297, 16033943772281, 67920864283629, 287717416776137, 1218790505711045, 5162879481166789, 21870308363154596 ]
[ "nonn" ]
A151994
[ 5, 13, 13, 29, 29, 61, 61, 61, 61 ]
[ "nonn" ]
A225656
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 5, 1, 6, 7, 1, 1, 10, 1, 21, 20, 15, 1, 35, 1, 30, 1, 55, 1, 154, 1, 1, 140, 105, 264, 385, 1, 210, 420, 693, 1, 780, 1, 1365, 1001, 420, 1, 1155, 1, 462, 3080, 3465, 1, 770, 6552, 6435, 5460, 1260, 1, 17017, 1, 2310, 12155 ]
[ "nonn" ]
A106220
[ 1, 4, 2, 0, 3, 0, 2, 0, 1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2, 0, 3, 0, 0, 0, 3, 0, 2, 0, 3, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 3, 0, 0, 0, 3, 0, 0, 0, 0, 0, 2, 0, 3, 0, 2, 0, 1, 0, 0, 0, 3, 0, 0, 0, 3, 0, 0, 0, 3, 0, 2, 0, 1, 0, 2, 0, 3, 0, 0, 0, 1, 0, 2, 0, 0, 0, 0, 0, 1 ]
[ "nonn" ]
A237703
[ 81, 310, 310, 1186, 1524, 1186, 4700, 7562, 7562, 4700, 18612, 39236, 49152, 39236, 18612, 73176, 201754, 333508, 333508, 201754, 73176, 287924, 1033140, 2234136, 3004030, 2234136, 1033140, 287924, 1136084, 5302002, 14991412, 26578184 ]
[ "nonn", "tabl" ]
A195415
[ 1, 2, 10, 92, 1351, 28982, 855100, 33214232, 1642999501, 100843185962, 7520379392890, 669760178257172, 70211429619908850, 8558006664633639000, 1.200128210993564e+21, 1.918610708748186e+23, 3.46859677306112e+25, 7.041037426518318e+27 ]
[ "nonn" ]
A114161
[ 3, 5, 17, 91, 667, 6213, 70233, 933819, 14277555, 246772485, 4757596065, 101218975515, 2355535057995, 59520844736325, 1622874515042025, 47490277029572470, 1484579154624005400, 49374909670517200000 ]
[ "nonn" ]
A186344
[ 2, 3, 5, 7, 8, 10, 12, 13, 15, 17, 19, 20, 22, 24, 25, 27, 29, 30, 32, 34, 36, 37, 39, 41, 42, 44, 46, 48, 49, 51, 53, 54, 56, 58, 59, 61, 63, 65, 66, 68, 70, 71, 73, 75, 77, 78, 80, 82, 83, 85, 87, 88, 90, 92, 94, 95, 97, 99, 100, 102, 104, 106, 107, 109, 111, 112, 114, 116, 118, 119, 121, 123, 124, 126, 128, 129, 131, 133, 135, 136, 138, 140, 141, 143, 145, 147, 148, 150, 152, 153, 155, 157, 158, 160, 162, 164, 165, 167, 169, 170 ]
[ "nonn" ]
A070306
[ 2, 1, 2, 2, 4, 1, 6, 4, 6, 2, 10, 2, 12, 3, 4, 8, 16, 3, 18, 4, 6, 5, 22, 4, 20, 6, 18, 6, 28, 2, 30, 16, 10, 8, 12, 6, 36, 9, 12, 8, 40, 3, 42, 10, 12, 11, 46, 8, 42, 10, 16, 12, 52, 9, 20, 12, 18, 14, 58, 4, 60, 15, 18, 32, 24, 5, 66, 16, 22, 6, 70, 12, 72, 18, 20, 18, 30, 6, 78, 16 ]
[ "easy", "nonn" ]
A207945
[ 2, 16, 102, 1369, 18172, 362404, 7513176, 208947025, 6018764552, 220642515076, 8323556149400, 385679126851225, 18298351908731960, 1039016878950507100, 60196918693633190000, 4.0918357266075704e+21, 2.8304017274187722e+23 ]
[ "nonn" ]
A371747
[ 1, 4, 5, 2, 3, 5, 3, 6, 4, 2, 4, 4, 9, 5, 9, 7, 0, 1, 5, 8, 3, 4, 7, 1, 3, 0, 2, 2, 4, 8, 5, 2, 7, 4, 8, 7, 3, 3, 6, 1, 2, 2, 7, 9, 7, 8, 8, 0, 7, 9, 2, 6, 3, 4, 9, 6, 2, 5, 3, 8, 2, 7, 1, 8, 4, 0, 3, 6, 8, 6, 3, 0, 0, 7, 8, 1, 9, 4, 0, 3, 1, 6, 1, 0, 1, 4, 0, 7, 2, 0, 6, 0, 1, 5, 3, 6, 2, 1, 2, 9 ]
[ "nonn", "cons" ]
A277729
[ 1, 1, 1, 1, 2, 1, 2, 0, 1, 1, 3, 0, 1, 1, 3, 0, 2, 1, 4, 0, 2, 1, 4, 0, 3, 1, 4, 0, 3, 0, 1, 1, 5, 0, 3, 0, 1, 1, 5, 0, 3, 0, 2, 1, 5, 0, 4, 0, 2, 1, 6, 0, 4, 0, 2, 1, 6, 0, 5, 0, 2, 1, 6, 0, 5, 0, 3, 1, 6, 0, 5, 0, 4, 1, 7, 0, 5, 0, 4, 1, 7, 0, 5, 0, 5, 1, 7, 0, 6, 0, 5, 1, 8, 0, 6, 0, 5, 1, 8, 0, 6, 0, 6, 1, 8, 0, 7, 0, 6, 1, 8, 0, 7, 0, 7, 1, 8, 0, 7, 0, 7, 0, 1, 1, 8, 0, 8, 0, 7, 0, 1, 1, 9, 0 ]
[ "nonn", "tabf" ]
A123066
[ 0, 1, 2, 3, 4, 3, 4, 5, 6, 5, 6, 5, 6, 5, 4, 5, 6, 5, 6, 5, 4, 3, 4, 3, 4, 3, 4, 3, 4, 5, 6, 7, 6, 5, 4, 3, 4, 3, 2, 1, 2, 3, 4, 3, 2, 1, 2, 1, 2, 1, 0, -1, 0, -1, -2, -3, -4, -5, -4, -3, -2, -3, -4, -3, -4, -3, -2, -3, -4, -3, -2, -3, -2, -3, -4, -5, -6, -5, -4, -5, -4, -5, -4, -3, -4, -5, -6, -7, -6, -5, -6, -7, -8, -9, -10 ]
[ "easy", "look", "sign" ]
A180311
[ 8, 7, 8, 0, 5, 5, 6, 8, 5, 1, 7, 1, 7, 2, 6, 2, 4, 0, 8, 6, 0, 7, 4, 0, 9, 7, 0, 8, 7, 0, 4, 0, 9, 7, 3, 5, 2, 6, 2, 6, 3, 2, 2, 1, 5, 5, 1, 0, 8, 3, 6, 3, 2, 7, 6, 7, 4, 7, 8, 6, 8, 1, 0, 1, 3, 6, 8, 3, 9, 7, 2, 8, 8, 2, 1, 6, 5, 3, 8, 3, 2, 9, 0, 1, 9, 7, 1, 8, 5, 2, 6, 6, 6, 5, 1, 7, 6, 2, 3, 2, 7, 3, 5, 5, 6 ]
[ "nonn", "cons" ]
A145612
[ 1, 6, 15, 420, 63, 1386, 9009, 360360, 1531530, 29099070, 14549535, 1338557220, 1673196525, 10039179150, 145568097675, 72201776446800, 18050444111700, 9025222055850, 166966608033225, 667866432132900, 6845630929362225 ]
[ "frac", "nonn" ]
A191975
[ 1, 2, 6, 42, 330, 235290, 310800, 1.8638510536284942e+24 ]
[ "nonn", "more", "hard" ]
A384431
[ 1, 2961, 5987, 1456, 5703, 11105, 10039, 6861, 5927, 11593, 4257, 254, 3940, 7692, 3887, 8860, 3009, 2669, 217, 9, 6401, 11770, 8493, 926, 5404, 2325, 8024, 2899, 3285, 1559, 2077, 9195, 3311, 760, 5898, 11102, 8749, 3195, 10775, 11887, 10887, 152, 7996, 2838 ]
[ "nonn", "look", "easy" ]
A352208
[ 1, 1, 1, 4, 10, 20, 35, 56, 84 ]
[ "nonn", "more" ]
A147293
[ 1, 1, 2, 2, 2, 5, 4, 4, 5, 13, 8, 8, 10, 13, 34, 16, 16, 20, 26, 34, 89, 32, 32, 40, 52, 68, 89, 233, 64, 64, 80, 104, 136, 178, 233, 610, 128, 128, 160, 208, 272, 356, 466, 610, 1597, 256, 256, 320, 416, 544, 712, 932, 1220, 1597, 4181 ]
[ "nonn", "tabl" ]
A347912
[ 1, 2, 3, 5, 6, 8, 9, 11, 14, 15, 17, 20, 21, 23, 26, 30, 31, 33, 36, 40, 41, 43, 46, 50, 55, 56, 58, 61, 65, 70, 71, 73, 76, 80, 85, 91, 92, 94, 97, 101, 106, 112, 113, 115, 118, 122, 127, 133, 140, 141, 143, 146, 150, 155, 161, 168, 169, 171, 174, 178, 183, 189, 196, 204 ]
[ "nonn", "easy" ]
A149243
[ 1, 1, 4, 11, 36, 125, 453, 1643, 6188, 23609, 91127, 355475, 1402336, 5573671, 22297494, 89782237, 363634796, 1479469837, 6045872801, 24810245469, 102175595798, 422157858039, 1749638392988, 7271801874529, 30300634687428, 126561757177773, 529820253495847, 2222601036368867, 9341909964352610 ]
[ "nonn", "walk" ]
A054097
[ 3, 8, 26, 108, 554, 3392, 24138, 195716, 1781018, 17974584, 199254842, 2406840668, 31466482506, 442700857328, 6669158209514, 107112774491892, 1827078520647098 ]
[ "nonn" ]
A168982
[ 1, 17, 272, 4352, 69632, 1114112, 17825792, 285212672, 4563402752, 73014444032, 1168231104512, 18691697672192, 299067162755072, 4785074604081152, 76561193665298430, 1224979098644775000, 19599665578316400000 ]
[ "nonn" ]
A194926
[ 4, 26, 386, 12474, 882318, 136403494, 46128809462, 34125388757746, 55232992212354490, 195592244264620500000, 1.515477849222358e+24, 2.569202772543509e+28, 9.530190935942861e+32 ]
[ "nonn" ]
A014339
[ 1, 1, 0, -1, -1, -1, 0, 1, 1, 0, 0, -1, -1, 0, 1, 1, 1, 0, -1, -1, 0, 0, 1, 1, 0, -1, -1, -1, 0, 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, 1, 1, 0, -1, -1, -1, 0, 1, 1, 0, 0, -1, -1, 0, 1, 1, 1, 0, -1, -1, 0, 0, 1, 1, 0, -1 ]
[ "sign" ]
A024896
[ 1, 3, 5, 9, 11, 15, 17, 21, 23, 33, 35, 39, 45, 47, 53, 57, 59, 63, 71, 75, 77, 87, 89, 93, 101, 105, 113, 119, 123, 129, 131, 135, 137, 147, 149, 155, 165, 171, 173, 177, 191, 197, 203, 207, 213, 219, 221, 225, 231, 233, 239, 243, 245, 257, 261, 275, 285, 287, 291, 297, 299 ]
[ "nonn", "easy" ]
A110128
[ 1, 1, 2, 4, 16, 44, 200, 1288, 9512, 78652, 744360, 7867148, 91310696, 1154292796, 15784573160, 232050062524, 3648471927912, 61080818510972, 1084657970877416, 20361216987032284, 402839381030339840, 8377409956454452000 ]
[ "nonn", "nice" ]
A143286
[ 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 9, 13, 19, 27, 37, 49, 63, 80, 102, 132, 173, 228, 300, 392, 508, 654, 839, 1076, 1382, 1778, 2289, 2945, 3783, 4850, 6207, 7934, 10135, 12943, 16526, 21095, 26915, 34320, 43733, 55692, 70882, 90174, 114673, 145778 ]
[ "nonn", "easy" ]
A225234
[ 1171, 1319, 1373, 1733, 1973, 1979, 2131, 2137, 2179, 2311, 2371, 2377, 2711, 2713, 2719, 2731, 2791, 2797, 2971, 3137, 3313, 3319, 3371, 3373, 3719, 3733, 3739, 3793, 3797, 4133, 4139, 4177, 4373, 4733, 4793, 4799, 4973, 5171, 5179, 5711, 5717, 5737, 5791 ]
[ "nonn", "base", "less" ]
A358187
[ 7, 1, 6, 6, 7, 2, 7, 4, 9, 2, 8, 2, 2, 8, 6, 6, 3, 8, 4, 2, 4, 7, 3, 9, 3, 0, 1, 4, 3, 2, 5, 5, 6, 1, 8, 3, 9, 2, 1, 5, 5, 1, 3, 7, 6, 0, 2, 9, 8, 6, 1, 6, 4, 6, 6, 7, 8, 9, 4, 5, 6, 8, 0, 2, 4, 2, 1, 4, 7, 4, 9, 0, 0, 7, 3, 3, 8, 7 ]
[ "nonn", "cons", "easy" ]
A011397
[ 1, 4, 3, 5, 1, 8, 8, 8, 8, 7, 8, 8, 4, 4, 8, 9, 4, 9, 4, 3, 9, 5, 0, 1, 7, 4, 2, 3, 7, 6, 0, 8, 4, 0, 9, 0, 3, 6, 6, 1, 4, 2, 6, 7, 2, 1, 7, 6, 8, 0, 7, 2, 1, 1, 6, 4, 7, 3, 3, 4, 3, 5, 8, 3, 7, 8, 3, 1, 1, 5, 4, 6, 5, 2, 7, 3, 8, 4, 1, 7, 5, 1, 8, 8, 6, 4, 9, 2, 6, 6, 0, 0, 5, 5, 9, 3, 5, 2, 1 ]
[ "nonn", "cons", "easy" ]