id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A064363
[ 0, 2, 14, 51, 133, 289, 547, 954, 1546, 2380, 3508, 5005, 6915, 9347, 12353, 16028, 20468, 25790, 32054, 39427, 47965, 57833, 69155, 82082, 96682, 113192, 131720, 152429, 175467, 201075, 229305, 260492, 294700, 332182, 373138, 417751, 466201 ]
[ "nonn", "nice", "easy" ]
A344801
[ 91, 101, 104, 106, 107, 109, 112, 115, 116, 118, 119, 122, 123, 125, 126, 127, 128, 131, 133, 134, 136, 139, 140, 141, 142, 143, 144, 146, 147, 148, 149, 151, 152, 154, 155, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173 ]
[ "nonn" ]
A013886
[ 18, 34012224, 64268410079232, 121439531096594250000, 2.2946825189512942e+26, 4.3359586579697586e+32, 8.193088729422602e+38, 1.5481398284277604e+45, 2.9253154793225868e+51 ]
[ "nonn" ]
A219917
[ 10, 12, 62, 234, 758, 2215, 6089, 16131, 41601, 104732, 257383, 617366, 1446049, 3311000, 7420755, 16302242, 35149900, 74472705, 155215596, 318538842, 644261359, 1285237151, 2530717545, 4921902564, 9460533531, 17981787273 ]
[ "nonn" ]
A260810
[ 0, 1, 22, 117, 376, 925, 1926, 3577, 6112, 9801, 14950, 21901, 31032, 42757, 57526, 75825, 98176, 125137, 157302, 195301, 239800, 291501, 351142, 419497, 497376, 585625, 685126, 796797, 921592, 1060501, 1214550, 1384801, 1572352, 1778337, 2003926, 2250325, 2518776 ]
[ "nonn", "easy" ]
A276229
[ 0, 0, 1, -1, -1, 4, -3, -6, 16, -7, -31, 61, -6, -147, 220, 68, -655, 739, 639, -2772, 2233, 3950, -11188, 5521, 20805, -43035, 6946, 99929, -156856, -36056, 449697, -534441, -401009, 1919588, -1652011, -2588174, 7811784, -4287447, -13924295, 30310973 ]
[ "sign", "easy" ]
A286416
[ 1, 3, 1, 8, 6, 1, 24, 25, 10, 1, 83, 98, 63, 15, 1, 324, 399, 338, 135, 21, 1, 1400, 1746, 1727, 980, 257, 28, 1, 6609, 8271, 8874, 6426, 2455, 448, 36, 1, 33758, 42284, 47191, 40334, 20506, 5474, 730, 45, 1, 185136, 231939, 263458, 250839, 158827, 57239, 11128, 1128, 55, 1 ]
[ "nonn", "tabl" ]
A062597
[ 2, 3, 5, 211 ]
[ "nonn", "hard" ]
A295778
[ 13, 123, 665, 5263, 37897, 262707, 1905471, 13577504, 96726819, 692170604, 4940333676, 35278772122, 252010713334, 1799646642508, 12852977396156, 91796379668972, 655591261804564, 4682182568641239, 33439719466609664 ]
[ "nonn" ]
A045262
[ 3999, 4299, 4359, 4371, 5799, 5859, 5871, 6159, 6171, 6231, 13299, 13359, 13371, 13659, 13671, 13731, 15159, 15171, 15231, 15531, 16499, 16799, 16859, 16871, 18299, 18359, 18371, 18659, 18671, 18731, 18999, 19299 ]
[ "nonn", "base" ]
A237588
[ 0, 0, -1, 0, -3, 1, -5, 0, -4, -1, -9, 5, -11, -3, -5, 0, -15, 4, -17, 3, -9, -7, -21, 13, -18, -9, -13, 1, -27, 13, -29, 0, -17, -13, -21, 20, -35, -15, -21, 11, -39, 13, -41, -3, -11, -19, -45, 29, -40, -6, -29, -5, -51, 13, -37, 9, -33, -25, -57, 49, -59, -27, -21, 0 ]
[ "sign" ]
A021900
[ 0, 0, 1, 1, 1, 6, 0, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1, 4, 2, 8, 5, 7, 1 ]
[ "nonn", "cons" ]
A180316
[ 0, 11, 23, 36, 40, 55, 61, 78, 86, 95, 105, 116, 128, 131, 145, 150, 166, 173, 181, 190, 200, 211, 223, 236, 240, 255, 261, 278, 286, 295, 305, 316, 328, 331, 345, 350, 366, 373, 381, 390, 400, 411, 423, 436, 440, 455, 461, 478, 486, 495, 505, 516, 528, 531, 545, 550, 566 ]
[ "easy", "base", "nonn" ]
A346276
[ 11711, 1111117, 7111111, 11171111, 1111711111, 11111111711, 11711111111, 1111111111117, 1111117111111, 7111111111111, 11111111171111, 11171111111111, 1111111111711111, 1111711111111111, 11111111111111712, 11111111711111112, 11711111111111112, 1111111111111111200, 1111111111117111200 ]
[ "nonn", "base", "easy" ]
A187911
[ 1, 3, 4, 5, 7, 8, 10, 11, 13, 14, 15, 17, 19, 20, 21, 22, 24, 26, 27, 28, 29, 31, 33, 34, 36, 37, 38, 40, 41, 42, 44, 45, 47, 49, 50, 52, 53, 54, 56, 57, 58, 59, 61, 63, 64, 66, 68, 69, 70, 71, 73, 74, 75, 77, 78, 80, 81, 82, 84, 86, 87, 89, 90, 91, 93, 94, 96, 98, 99, 100, 101, 103, 105, 106, 107, 108, 110, 111, 112, 114, 116, 117, 118, 119 ]
[ "nonn" ]
A235435
[ 26091, 2616323, 253925273, 23147332121, 2018613731175, 168052583588803, 13459467429347940, 1042223893302389100, 78500563366367690000, 5.781409148798361e+21, 4.183195567121428e+23 ]
[ "nonn" ]
A096556
[ 0, 453816693, 2013878382, 1461722811, 653338732, 1830525137, 1741773690, 526418231, 109789464, 1577774445, 1454795974, 1716389619, 180917764, 1381854025, 70154322, 301698031, 2068689712, 1594166885, 1923590686, 579939371, 2056610972, 914297537, 1800695338, 1283998631 ]
[ "nonn" ]
A093070
[ 9, 0, 5, 4, 1, 4, 7, 8, 7, 3, 6, 7, 2, 2, 6, 7, 9, 9, 0, 4, 0, 7, 6, 0, 9, 6, 4, 9, 6, 3, 6, 3, 7, 2, 5, 9, 5, 7, 3, 8, 1, 4, 8, 7, 3, 5, 4, 5, 7, 0, 7, 7, 9, 7, 3, 2, 0, 0, 6, 3, 1, 1, 2, 8, 6, 8, 3, 9, 0, 6, 7, 0, 9, 8, 5, 8, 2, 2, 0, 6, 6, 2, 9, 0, 4, 2, 5, 1, 8, 9, 0, 7, 0, 2, 3, 9, 7, 7, 7, 8, 8, 3 ]
[ "nonn", "cons", "easy" ]
A083566
[ 1, 3, 5, 7, 9, 15, 19, 25, 27, 53, 57, 65, 71, 87, 101, 151, 195, 247, 253, 255, 277, 289, 291, 301, 321, 355, 361, 443, 455, 461, 491, 531, 533, 541, 599, 603, 619, 635, 647, 667, 805, 817, 871, 1003, 1011, 1179, 1205, 1223, 1327, 1357, 1531, 1551, 1603, 1619 ]
[ "nonn" ]
A259705
[ 0, 0, 2, 8, 80, 480, 5040, 40320 ]
[ "nonn", "more" ]
A326987
[ 0, 0, 1, 0, 1, 2, 1, 0, 2, 2, 1, 3, 1, 2, 3, 0, 1, 4, 1, 3, 3, 2, 1, 4, 2, 2, 3, 3, 1, 6, 1, 0, 3, 2, 3, 6, 1, 2, 3, 4, 1, 6, 1, 3, 5, 2, 1, 5, 2, 4, 3, 3, 1, 6, 3, 4, 3, 2, 1, 9, 1, 2, 5, 0, 3, 6, 1, 3, 3, 6, 1, 8, 1, 2, 5, 3, 3, 6, 1, 5, 4, 2, 1, 9, 3, 2, 3, 4, 1, 10, 3, 3, 3, 2, 3, 6, 1, 4, 5, 6 ]
[ "nonn", "easy" ]
A091550
[ 1, 160, 39900, 15120000, 8202070800, 6058891238400, 5860547004312000, 7196668193594880000, 1.0944624305020967e+22, 2.0199809308312017e+25, 4.449016812072626e+28, 1.152908345992022e+32, 3.472848157481434e+35 ]
[ "nonn", "easy" ]
A103264
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 5, 6, 7, 8, 8, 9, 9, 10, 11, 13, 14, 15, 16, 18, 19, 21, 23, 24, 26, 28, 31, 34, 37, 39, 42, 45, 49, 53, 56, 60, 64, 69, 75, 81, 86, 92, 98, 105, 113, 122, 130, 138, 147, 157, 168, 179, 191, 202, 215, 230, 246, 262, 279 ]
[ "nonn" ]
A285677
[ 0, 1, 2, 1, 2, 0, 1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 2, 0, 1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 2, 0, 1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 2, 0, 1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 2, 0, 1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 2, 1, 2, 0, 1, 0, 1, 2 ]
[ "nonn", "easy" ]
A085472
[ 1, 1, 1, 1, 2, 1, 2, 3, 3, 2, 2, 5, 5, 5, 2, 3, 7, 9, 9, 7, 3, 4, 10, 14, 17, 14, 10, 4, 5, 14, 21 ]
[ "dead" ]
A244691
[ 1, 9, 7, 9, 5, 5, 9, 1, 1, 1, 3, 2, 2, 9, 3, 3, 9, 4, 4, 3, 5, 6, 1, 7, 8, 3, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 7, 7, 9, 3, 9, 0, 0, 3, 1, 1, 0 ]
[ "nonn", "easy" ]
A299517
[ 1, 2, 5, 8, 41, 117, 476, 1743, 7078, 28743, 116832, 478171, 1955738, 8011036, 32816061, 134450866, 550917593, 2257434204, 9250305870, 37905245020, 155326182456, 636489181785, 2608180914178, 10687710600371, 43795726882138 ]
[ "nonn" ]
A248390
[ 4, 9, 8, 15, 14, 25, 27, 16, 49, 121, 169, 85, 57, 32, 161, 319, 403, 125, 289, 81, 361, 64, 259, 529, 451, 841, 559, 961, 235, 901, 177, 1159, 128, 343, 1369, 1541, 781, 1681, 2117, 1027, 1849, 2573, 445, 2209, 1649, 2809, 243, 1121, 122, 707 ]
[ "nonn", "look" ]
A285086
[ 1, 2, 3914 ]
[ "nonn", "hard", "more", "bref" ]
A266332
[ 1, 2, 6, 24, 116, 642, 3954, 26528, 191368, 1468514, 11899358, 101177336, 898486540, 8299327770, 79481787362, 786962615104, 8036673996944, 84475005423394, 912287361123926, 10106308353804312, 114683674053106720, 1331405224273188400, 15795339232664162000, 191299235558676820000, 2.362987021847135e+21, 2.974443870388613e+22, 3.812510290531559e+23 ]
[ "nonn" ]
A018576
[ 1, 3, 9, 73, 219, 657 ]
[ "nonn", "fini", "full", "easy" ]
A159561
[ 1, 11, -41, -4015, -24239, 2335091, 45319591, -1771192951, -70875538655, 1515835139291, 120010721891191, -1135534984848319, -226349991243433860, -282369893132640450, 473587012734212700000, 5.849872057701169e+21, -1.086467848309424e+24 ]
[ "sign", "frac" ]
A366809
[ 1, 6, 30, 240, 2310, 30030, 518940, 9943560, 230876448, 6551588160, 200561595684, 7471933410000, 304250263527210, 13082853940673340, 618109122639794700, 32589631537463087000, 1.9227603502514776e+21, 1.1738669654368156e+23, 7.906535060701218e+24 ]
[ "nonn" ]
A008042
[ 1, 4, 10, 21, 34, 48, 70, 100, 130, 159, 194, 236, 282, 332, 384, 439, 500, 564, 630, 702, 780, 861, 944, 1030, 1120, 1214, 1314, 1421, 1530, 1636, 1746, 1868, 1994, 2119, 2248, 2382, 2520, 2662, 2808, 2957, 3110, 3268, 3430, 3596, 3764, 3935, 4112, 4294 ]
[ "nonn" ]
A014123
[ 1, -1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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, 0, 0, 0, 0, 0, -1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, -1, 0, 0 ]
[ "sign", "easy" ]
A136037
[ 7, 8, 14, 15, 16, 17, 23, 24, 28, 29, 30, 31, 32, 33, 34, 35, 39, 40, 46, 47, 48, 49, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 78, 79, 80, 81, 87, 88, 92, 93, 94, 95, 96, 97, 98, 99, 103, 104, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119 ]
[ "nonn", "base" ]
A353854
[ 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 3, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 3, 2, 3, 2, 2, 1, 1, 1, 2, 2, 1, 1, 3, 1, 1, 2, 2, 1, 1, 3, 2, 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 2, 3, 3, 2, 2, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 3, 1, 1, 3, 2, 1, 1, 1, 2, 2, 2, 2 ]
[ "nonn" ]
A075475
[ 1, 3, 15, 129, 270, 833, 5044, 59815, 9633693, 26427528, 4642779313, 26594615202, 62935243460, 91770096041, 1648209018135 ]
[ "nonn", "base", "more" ]
A006408
[ 4, 39, 190, 651, 1792, 4242, 8988, 17490, 31812, 54769, 90090, 142597, 218400, 325108, 472056, 670548, 934116, 1278795, 1723414, 2289903, 3003616, 3893670, 4993300, 6340230, 7977060, 9951669, 12317634, 15134665, 18469056, 22394152, 26990832, 32348008, 38563140 ]
[ "nonn" ]
A025677
[ 0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 4, 3, 2, 1, 0, 5, 4, 3, 2, 1, 0, 6, 5, 4, 3, 2, 1, 0, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 11, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2, 12, 1, 11, 0, 10, 9, 8, 7, 6, 5, 4, 3, 13, 2, 12, 1, 11, 0, 10, 9, 8, 7, 6, 5, 4, 14 ]
[ "nonn", "easy", "changed" ]
A389859
[ 6, 8, 32, 42, 368, 416, 464, 468, 486, 492, 616, 636, 656, 732, 848, 900, 1092, 1212, 1232, 1288, 1328, 1356, 1360, 1376, 1424, 1472, 1480, 1560, 1568, 1572, 1640, 1664, 1696, 1808, 1896, 2064, 2076, 2144, 2148, 2196, 2208, 2256, 2296, 2328, 2336, 2464, 2480, 2508 ]
[ "nonn", "easy" ]
A046891
[ 1, 2, 13, 103, 107, 1007, 1013, 1049, 1079, 1237, 10013, 10039, 10079, 10139, 10237, 10279, 10379, 13789, 100127, 100139, 100235, 100237, 100279, 101237, 101239, 102347, 102367, 102379, 103579, 103789, 1001234, 1001237, 1001239, 1002347, 1002359, 1002367, 1002379 ]
[ "nonn", "base" ]
A234683
[ 232, 1148, 5472, 27344, 131200, 661952, 3196416, 16276736, 79071232, 406166528, 1984192512, 10274852864, 50451742720, 263191642112, 1298305253376, 6818128265216, 33772142067712, 178415166291968, 886967057252352 ]
[ "nonn" ]
A150206
[ 1, 2, 6, 21, 80, 325, 1371, 5945, 26322, 118456, 539795, 2485364, 11541204, 53971667, 253912435, 1200681742, 5702732119, 27189790932, 130074587375, 624117990312, 3002521483738, 14478663206101, 69965966828818, 338743936413194, 1642874254072415, 7980241381187844, 38819241417135170, 189079627020638500 ]
[ "nonn", "walk" ]
A031879
[ 1, 9, 15, 21, 25, 33, 49, 51, 63, 69, 75, 87, 93, 99, 105, 111, 115, 129, 133, 135, 141, 159, 169, 171, 189, 195, 201, 205, 219, 231, 235, 237, 259, 261, 267, 273, 285, 289, 297, 303, 319, 321, 327, 339, 357, 361, 385, 391, 393, 399, 415, 427 ]
[ "nonn" ]
A059942
[ 1, 1, 3, 2, 2, 3, 7, 4, 5, 4, 4, 5, 4, 7, 15, 8, 9, 8, 9, 10, 9, 8, 8, 9, 10, 9, 8, 9, 8, 15, 31, 16, 17, 16, 19, 16, 17, 16, 17, 18, 21, 16, 17, 18, 17, 16, 16, 17, 18, 17, 16, 21, 18, 17, 16, 17, 16, 19, 16, 17, 16, 31, 63, 32, 33, 32, 35, 32, 33, 32, 35, 36, 33, 32, 35, 32, 33, 32 ]
[ "base", "nonn" ]
A287569
[ 2, 8, 11, 13, 19, 21, 26, 32, 33, 38, 44, 47, 52, 55, 57, 62, 65, 70, 76, 79, 84, 87, 89, 94, 98, 104, 107, 109, 115, 117, 122, 128, 132, 135, 137, 142, 146, 152, 155, 157, 163, 165, 170, 176, 177, 182, 188, 191, 195, 197, 202, 208, 209, 214, 220, 223, 228 ]
[ "nonn", "easy" ]
A284589
[ 2, 4, 7, 9, 11, 13, 16, 18, 21, 23, 25, 27, 30, 32, 35, 37, 40, 42, 45, 47, 49, 51, 54, 56, 59, 61, 63, 65, 68, 70, 73, 75, 77, 79, 82, 84, 87, 89, 91, 93, 96, 98, 101, 103, 106, 108, 111, 113, 115, 117, 120, 122, 125, 127, 129, 131, 134, 136, 139, 141, 144 ]
[ "nonn", "easy" ]
A004176
[ 0, 0, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 2, 3, 4, 5, 6, 7, 8, 9, 20, 2, 22, 23, 24, 25, 26, 27, 28, 29, 30, 3, 32, 33, 34, 35, 36, 37, 38, 39, 40, 4, 42, 43, 44, 45, 46, 47, 48, 49, 50, 5, 52, 53, 54, 55, 56, 57, 58, 59, 60, 6, 62, 63, 64, 65, 66, 67, 68, 69, 70, 7, 72, 73, 74 ]
[ "nonn", "base", "look" ]
A182845
[ 1, 3, 6, 11, 20, 35, 58, 96, 154, 242, 375, 573, 861, 1282, 1886, 2745, 3961, 5667, 8038, 11323, 15836, 22001, 30383, 41715, 56953, 77363, 104566, 140668, 188397, 251247, 333689, 441474, 581890, 764215, 1000233, 1304815, 1696717, 2199591, 2843073, 3664312 ]
[ "nonn", "easy" ]
A152419
[ 1, 5, 3, 0, 0, 9, 0, 2, 9, 9, 9, 2, 1, 7, 9, 2, 7, 8, 1, 2, 7, 8, 4, 6, 6, 7, 1, 8, 4, 2, 5, 2, 4, 8, 2, 0, 0, 1, 6, 0, 6, 3, 8, 0, 6, 4, 5, 2, 7, 0, 2, 6, 8, 0, 4, 7, 2, 1, 7, 0, 2, 1, 5, 2, 8, 8, 1, 5, 4, 3, 2, 3, 8, 1, 0, 4, 8, 6, 0, 3, 5, 9, 7, 9, 9, 1, 5, 2, 2, 5, 7, 7, 0, 9, 0, 6, 0, 3, 6, 5, 4, 9, 7, 9, 6 ]
[ "cons", "easy", "nonn" ]
A174913
[ 3, 5, 17, 29, 59, 149, 197, 227, 239, 269, 419, 569, 659, 1277, 1427, 1487, 1667, 1949, 2087, 2129, 2267, 2339, 2549, 2789, 2999, 3359, 3389, 3929, 4049, 4157, 4217, 4229, 4517, 4637, 5099, 5417, 5477, 6089, 6197, 6299, 6359, 6569, 6659, 6827, 6959, 7127 ]
[ "nonn" ]
A320019
[ 1, 0, 1, 0, 2, 1, 0, 2, 4, 1, 0, 3, 8, 6, 1, 0, 2, 14, 18, 8, 1, 0, 4, 20, 41, 32, 10, 1, 0, 2, 28, 78, 92, 50, 12, 1, 0, 4, 37, 132, 216, 175, 72, 14, 1, 0, 3, 44, 209, 440, 490, 298, 98, 16, 1, 0, 4, 58, 306, 814, 1172, 972, 469, 128, 18, 1 ]
[ "nonn", "tabl" ]
A307966
[ 0, 0, 1, 0, 2, 2, 6, 3, 11, 8, 19, 14, 28, 23, 45, 33, 59, 52, 83, 67, 109, 93, 141, 121, 175, 155, 224, 191, 267, 243, 327, 288, 390, 351, 462, 417, 537, 492, 634, 570, 722, 671, 834, 762, 950, 878, 1078, 998, 1210, 1130, 1371, 1266, 1520, 1432, 1700, 1585 ]
[ "nonn" ]
A304189
[ 1, 0, 1, 14, 262, 6512, 202194, 7540004, 328229124, 16332497152, 914162756076, 56834335366552, 3885119345623448, 289588265286519800, 23372826192097313000, 2.030600572225893e+21, 1.889345501892057e+23, 1.8743556336897312e+25, 1.974977055586234e+27, 2.2026807759225143e+29, 2.59234417375449e+31 ]
[ "nonn" ]
A350595
[ 1, 0, 6, 1680, 5562130, 248832363780, 157933807781230400, 1.4593713783733497e+24, 1.995403565068807e+32, 4.082787932262562e+41, 1.2605249484391847e+52 ]
[ "nonn" ]
A214062
[ 1, 3, 5, 1, 9, 11, 1, 15, 2, 1, 21, 23, 1, 2, 29, 1, 33, 35, 1, 39, 41, 1, 3, 2, 1, 51, 53, 1, 2, 3, 1, 63, 65, 1, 69, 5, 1, 75, 2, 1, 81, 83, 1, 2, 89, 1, 5, 95, 1, 99, 3, 1, 105, 2, 1, 111, 113, 1, 2, 119, 1, 6, 125, 1, 3, 131, 1, 135, 2, 1, 141, 3, 1, 2, 6, 1, 153, 155, 1 ]
[ "nonn", "easy" ]
A385388
[ 2, 1, 2, 3, 6, 11, 8, 7, 2, 1, 2, 3, 10, 24, 76, 213, 522, 982, 1308, 1274, 972, 593, 288, 114, 38, 10, 2, 1, 2, 3, 10, 28, 104, 387, 1518, 5799, 21336, 73400, 230462, 644155, 1556484, 3151899, 5183442, 6823550, 7342196, 6639409, 5131834, 3433229, 1992710, 1007190, 440148, 166572, 53566, 14806, 3356, 682, 104, 20, 2, 1 ]
[ "nonn", "tabf" ]
A304225
[ 4, 3, 5, 6, 11, 16, 22, 33, 49, 71, 104, 153, 224, 328, 481, 705, 1033, 1514, 2219, 3252, 4766, 6985, 10237, 15003, 21988, 32225, 47228, 69216, 101441, 148669, 217885, 319326, 467995, 685880, 1005206, 1473201, 2159081, 3164287, 4637488, 6796569 ]
[ "nonn" ]
A322455
[ 3, 20, 418, 8543, 174642, 3570145, 72983221, 1491970367, 30499826474, 623497246004, 12745935328713, 260560681614770, 5326550547499821, 108888803019858060, 2225975576006274300, 45504837297851710000, 930239414944110600000, 1.901655781013888e+22 ]
[ "nonn", "easy" ]
A072982
[ 3, 11, 17, 73, 101, 137, 257, 353, 449, 641, 1409, 10753, 15361, 19841, 65537, 69857, 453377, 976193, 1514497, 5767169, 5882353, 6187457, 8253953, 8257537, 70254593, 167772161, 175636481, 302078977, 458924033, 639631361, 1265011073 ]
[ "nonn", "base" ]
A318522
[ 1, 9, 1, 2, 8, 2, 4, 4, 0, 0, 6, 0, 9, 2, 8, 0, 1, 6, 7, 5, 1, 2, 9, 5, 5, 0, 6, 4, 7, 8, 3, 3, 5, 0, 9, 8, 9, 7, 2, 3, 0, 7, 2, 0, 7, 2, 5, 4, 5, 7, 1, 9, 1, 0, 5, 5, 3, 7, 7, 1, 1, 5, 0, 8, 1, 2, 5, 0, 5, 0, 9, 2, 3, 3, 9, 3, 9, 5, 6, 1, 9, 5, 8, 0, 8 ]
[ "nonn", "cons" ]
A337304
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 12, 11, 14, 15, 16, 17, 20, 25, 18, 21, 26, 29, 24, 19, 22, 27, 28, 23, 30, 31, 32, 33, 40, 49, 36, 41, 52, 57, 34, 37, 42, 53, 50, 45, 58, 61, 48, 35, 44, 51, 38, 43, 54, 59, 56, 39, 46, 55, 60, 47, 62, 63, 64, 65, 80, 97 ]
[ "nonn", "look", "base" ]
A212826
[ 1, 2, 5, 13, 44, 168, 716, 3331, 16599, 87059, 473569, 2641428, 14982656, 85930423, 496412949, 2881216925, 16773626497, 97843056510, 571457023718, 3340356838651, 19535838889479, 114293073644447, 668811749036809, 3914263576403496 ]
[ "nonn" ]
A114231
[ 1, 1, 1, 3, 3, 1, 1, 1, 2, 1, 3, 2, 4, 4, 2, 9, 1, 3, 2, 4, 5, 1, 5, 2, 8, 3, 1, 3, 1, 1, 3, 8, 2, 6, 1, 4, 3, 8, 2, 7, 7, 14, 9, 7, 1, 4, 3, 1, 1, 1, 5, 1, 1, 2, 8, 4, 1, 8, 2, 4, 1, 8, 3, 9, 5, 3, 2, 1, 4, 1, 4, 4, 2, 3, 2, 4, 2, 12, 3, 1, 1, 3, 12, 2, 1, 2, 5, 5, 3, 3, 10, 4, 19, 1, 6, 4, 8, 7, 2, 5, 9, 2, 3 ]
[ "easy", "nonn" ]
A293642
[ 0, 0, 0, 1, 1, 3, 4, 7, 12, 20, 33, 53, 86, 139, 226, 366, 592, 958, 1550, 2508, 4059, 6567, 10626, 17194, 27820, 45015, 72835, 117850, 190686, 308537, 499224, 807761, 1306985, 2114746, 3421732, 5536479, 8958211, 14494690, 23452901, 37947591, 61400493 ]
[ "nonn", "easy" ]
A183609
[ 1, 1, 2, 11, 140, 3317, 121528, 6119023, 393990922, 30967643569, 2877662229666, 308859441395270, 37617620420277250, 5127547379787330000, 773519559519251500000, 1.2796638369051856e+23, 2.3038617512398944e+25 ]
[ "nonn" ]
A337519
[ 4, 15, 28, 47, 68, 95, 124, 159, 196, 239, 284, 335, 388, 447, 508, 575, 644, 719, 796, 879, 964, 1055, 1148, 1247, 1348, 1455, 1564, 1679, 1796, 1919, 2044, 2175, 2308, 2447, 2588, 2735, 2884, 3039, 3196, 3359, 3524, 3695, 3868, 4047, 4228, 4415, 4604, 4799, 4996 ]
[ "nonn", "easy" ]
A184215
[ 65937529, 444611005885, 1885849010087814, 9695194773105360000, 4.650780079338733e+22, 2.293313052852075e+26, 1.1190671669946354e+30, 5.483108738502332e+33 ]
[ "nonn" ]
A017982
[ 1, 1, 2, 3, 4, 6, 9, 12, 18, 27, 38, 56, 81, 116, 168, 243, 350, 505, 729, 1051, 1516, 2187, 3154, 4549, 6561, 9462, 13647, 19683, 28387, 40942, 59049, 85163, 122826, 177147, 255490, 368480, 531441, 766470, 1105441, 1594323, 2299411, 3316325, 4782969, 6898234 ]
[ "nonn" ]
A180521
[ 67, 103, 107, 163, 167, 307, 367, 401, 461, 503, 509, 563, 569, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 673, 683, 701, 709, 761, 769, 907, 967, 1009, 1013, 1019, 1021, 1061, 1069, 1093, 1097, 1103, 1163, 1301, 1307, 1361, 1367, 1601, 1609, 1613 ]
[ "base", "nonn" ]
A061681
[ 1, 2, 4, 8, 16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 33, 36, 39, 42, 46, 50, 55, 60, 66, 72, 79, 86, 94, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134 ]
[ "base", "easy", "nonn", "nice", "look" ]
A114423
[ 1, 1, 1, 2, 1, 1, 6, 2, 1, 1, 24, 3, 2, 1, 1, 120, 8, 3, 2, 1, 1, 720, 15, 4, 3, 2, 1, 1, 5040, 48, 10, 4, 3, 2, 1, 1, 40320, 105, 18, 5, 4, 3, 2, 1, 1, 362880, 384, 28, 12, 5, 4, 3, 2, 1, 1, 3628800, 945, 80, 21, 6, 5, 4, 3, 2, 1, 1, 39916800, 3840, 162, 32, 14, 6, 5, 4, 3, 2, 1, 1 ]
[ "nonn", "easy", "tabl" ]
A116681
[ 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 2, 0, 0, 0, 1, 0, 1, 0, 2, 0, 1, 0, 1, 0, 1, 2, 0, 0, 0, 1, 0, 1, 0, 2, 0, 2, 0, 2, 0, 1, 0, 1, 0, 2, 3, 0, 0, 0, 2, 0, 1, 0, 2, 0, 2, 0, 3, 0, 2, 0, 2, 0, 1, 0, 2, 0, 2, 4, 0, 0, 0, 2, 0, 2, 0, 2, 0, 2, 0, 3, 0, 4, 0, 3, 0, 2, 0, 2, 0, 2, 0, 2, 0, 3 ]
[ "nonn", "tabl" ]
A114675
[ 712321, 1064281, 2957761, 3190151, 3968761, 4501201, 4630081, 5154551, 5198449, 5802073, 5861881, 5873111, 6272401, 6439681, 6813409, 7168561, 7177921, 7552801, 8049889, 8054281, 9432361, 10333801, 10369129, 11069881, 11315929, 11652481, 11935871, 12740809 ]
[ "nonn" ]
A156941
[ 1, -15, -76, 10215, 45980, -5490375, -73409236, 49447113495, 220167188060, -47706250419225, -1061972390305396, 562541361966308800, 7513441220176840000, -2.3518252540276528e+21, -7.3293547498840525e+22, 2.117728417674739e+26, 9.428288414828146e+26 ]
[ "sign", "frac" ]
A373737
[ 162, 250, 686, 1875, 7203, 2662, 4394, 750, 3993, 578, 12005, 722, 6591, 2058, 1058, 14739, 73205, 20577, 1682, 1922, 142805, 5346, 36501, 3430, 2738, 102487, 6318, 3362, 417605, 3698, 73167, 199927, 89373, 4418, 651605, 5202, 25725, 5618, 13310, 151959, 6498 ]
[ "nonn", "easy" ]
A069341
[ 1, 11309768, 22779900825195, 24471786016855405000, 1.9494870504116923e+25, 1.3160595194449992e+31, 8.025991217666841e+36, 4.574735745210954e+42, 2.4853288286791065e+48 ]
[ "nonn" ]
A308898
[ 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 0 ]
[ "nonn" ]
A240177
[ 1, 1, 1, 2, 3, 4, 5, 8, 10, 14, 18, 24, 30, 41, 51, 66, 83, 106, 131, 167, 204, 257, 315, 391, 475, 587, 710, 869, 1049, 1275, 1529, 1852, 2213, 2662, 3173, 3796, 4506, 5373, 6356, 7544, 8900, 10523, 12373, 14585, 17101, 20085, 23494, 27508, 32087, 37471 ]
[ "nonn", "easy" ]
A074339
[ 3, 7, 9, 51, 57, 103, 119, 121, 183, 293, 301, 351, 447, 479, 577, 741, 839, 1051, 1277, 1431, 1633, 1877, 2043, 2251, 2303, 2659, 2937, 3447, 3897, 3969, 4059, 4179, 4371, 4389, 4563, 4841, 4903, 5097, 5103, 5369, 5689, 6621, 6831, 6927, 7479, 9227, 9351 ]
[ "nonn", "base" ]
A139571
[ 1073741824, 205891132094649, 931322574615478500000, 2.2539340290692256e+25, 1.7449402268886406e+31, 2.619995643649945e+33 ]
[ "nonn", "easy" ]
A069643
[ 6, 2352, 30481920, 9958443264000, 71274072206937600000, 1.028400359406101e+28, 2.8352758990854706e+37, 1.439725057274629e+48 ]
[ "easy", "nonn" ]
A345148
[ 6883, 12411, 13104, 13923, 14112, 14581, 14896, 14904, 15561, 15876, 16317, 16640, 17208, 17479, 17992, 18739, 18865, 18928, 19035, 19080, 19376, 19665, 19712, 19763, 19880, 20007, 20384, 20755, 20979, 21203, 21231, 21420, 21707, 21896, 22409, 22617, 22743 ]
[ "nonn" ]
A091107
[ 0, 1, 2, 9, 23, 68, 208 ]
[ "nonn", "more" ]
A085562
[ 1, 0, 0, 4, 0, 6, 0, 8, 9, 1, 2, 1, 1, 5, 1, 7, 1, 9, 10, 0, 1, 0, 0, 4, 0, 6, 0, 8, 9, 0, 1, 0, 0, 4, 0, 6, 0, 8, 9, 4, 5, 4, 4, 8, 4, 10, 4, 12, 13, 0, 1, 0, 0, 4, 0, 6, 0, 8, 9, 6, 7, 6, 6, 10, 6, 12, 6, 14, 15, 0, 1, 0, 0, 4, 0, 6, 0, 8, 9, 8, 9, 8, 8, 12, 8, 14, 8, 16, 17, 9, 10, 9, 9, 13, 9, 15, 9 ]
[ "base", "easy", "nonn" ]
A289956
[ 2027025, 218243025, 13818229425, 680438103345, 29079209884725, 1141483113695925, 42556765607801450, 1539279211706361000, 54789078082648965000, 1.93810261499334e+21, 6.861259243420904e+22, 2.4432744710260787e+24, 8.783986210276123e+25 ]
[ "nonn" ]
A241474
[ 3, 6, 5, 8, 7, 9, 407, 68, 11, 14, 13, 18, 413, 20, 17, 24, 19, 22, 49, 21020, 23, 25, 27, 104, 65, 32, 29, 628, 31, 34, 35, 40, 53, 38, 37, 6136, 77, 44, 41, 2140, 43, 46, 4043, 50, 47, 49, 51, 56, 40049, 130, 53, 652, 57, 58, 95, 116, 59, 62, 61, 480, 65, 68 ]
[ "nonn", "base" ]
A145474
[ 13, 61, 73, 109, 181, 193, 241, 313, 349, 373, 409, 433, 541, 601, 613, 661, 733, 829, 853, 1033, 1069, 1129, 1201, 1213, 1249, 1453, 1489, 1609, 1693, 1741, 1753, 1801, 1861, 2029, 2053, 2089, 2113, 2161, 2221, 2293, 2389, 2593, 2749, 2833, 2953, 3049 ]
[ "nonn" ]
A060976
[ 1, 25, 35, 49, 65, 77, 85, 91, 95, 115, 119, 121, 125, 133, 143, 145, 155, 161, 169, 175, 185, 187, 203, 205, 209, 215, 217, 221, 235, 245, 247, 259, 265, 287, 289, 295, 299, 301, 305, 319, 323, 325, 329, 335, 341, 343, 355, 361, 365, 371, 377, 391, 395, 403 ]
[ "nonn" ]
A053472
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 4, 0, 2, 0, 4, 0, 4, 0, 4, 0, 4, 0, 8, 0, 4, 1, 4, 0, 4, 0, 8, 0, 4, 0, 8, 0, 4, 1, 8, 0, 8, 0, 4, 1, 4, 0, 8, 0, 8, 0, 8, 0, 8, 0, 8, 0, 8, 0, 16, 0, 8, 1, 12, 0, 16, 1, 8, 0, 8, 0, 16, 0, 8, 0, 8, 0, 8, 0, 8, 1, 16, 0, 16 ]
[ "nonn" ]
A022879
[ 1, 0, 1, 2, 0, 2, 0, 1, 3, 0, 1, 3, 0, 3, 0, 1, 2, 0, 5, 0, 1, 2, 0, 2, 4, 0, 2, 0, 4, 2, 0, 2, 3, 0, 3, 0, 1, 7, 0, 2, 0, 1, 4, 0, 3, 2, 0, 4, 0, 1, 5, 0, 4, 0, 2, 2, 0, 6, 2, 0, 3, 0, 2, 4, 0, 1, 6, 0, 2, 0, 4, 4, 0, 2, 0, 1, 9, 0, 1, 3, 0, 4, 0, 2, 2, 0, 5, 3, 0, 5 ]
[ "nonn" ]
A194075
[ 1, 4, 2, 7, 5, 3, 13, 8, 6, 10, 19, 14, 9, 16, 11, 28, 20, 15, 22, 17, 12, 37, 29, 21, 31, 23, 18, 25, 49, 38, 30, 40, 32, 24, 34, 26, 61, 50, 39, 52, 41, 33, 43, 35, 27, 76, 62, 51, 64, 53, 42, 55, 44, 36, 46, 91, 77, 63, 79, 65, 54, 67, 56, 45, 58, 47, 109, 92, 78 ]
[ "nonn", "tabl" ]
A339560
[ 1, 0, 0, 1, 1, 2, 2, 4, 5, 8, 8, 13, 17, 22, 28, 39, 48, 62, 81, 101, 127, 167, 202, 253, 318, 395, 486, 608, 736, 906, 1113, 1353, 1637, 2011, 2409, 2922, 3510, 4227, 5060, 6089, 7242, 8661, 10306, 12251, 14503, 17236, 20345, 24045, 28334, 33374, 39223, 46076 ]
[ "nonn" ]
A168776
[ 1, 3, 6, 12, 24, 48, 96, 192, 384, 768, 1536, 3072, 6144, 12288, 24576, 49152, 98304, 196608, 393216, 786429, 1572852, 3145695, 6291372, 12582708, 25165344, 50330544, 100660800, 201321024, 402640896, 805279488, 1610554368, 3221099520 ]
[ "nonn", "easy" ]
A272118
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 61, 62, 64, 66, 67, 68, 69, 71, 72 ]
[ "nonn" ]
A144301
[ 1, 1, 2, 7, 37, 266, 2431, 27007, 353522, 5329837, 90960751, 1733584106, 36496226977, 841146804577, 21065166341402, 569600638022431, 16539483668991900, 513293594376771400, 16955228098102446000, 593946277027962400000, 2.199296747813271e+22, 8.583196779242038e+23 ]
[ "nonn", "easy" ]
A201153
[ 53, 745, 9287, 100362, 988216, 9005581, 77316192, 632331257, 4971371594, 37852928161, 280870999959, 2040764929737, 14573664882124, 102583696681074, 713346304542539, 4909295618862765, 33487025412414016, 226676629629048030 ]
[ "nonn" ]
A146634
[ 1, 1, 1, 17, 49, 309, 4193, 83267, 2435243, 97883893, 6457826001, 684365474903 ]
[ "nonn" ]
A327202
[ 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1 ]
[ "nonn", "easy" ]