id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A125943
[ 1, 2, 0, 3, 1, 2, 4, 3, 5, 2, 4, 3, 5, 2, 1, 3, 5, 2, 4, 7, 5, 6, 4, 7, 8, 6, 9, 2, 8, 6, 9, 7, 4, 6, 5, 7, 4, 2, 5, 3, 1, 2, 5, 3, 4, 2, 5, 3, 4, 2, 1, 3, 8, 2, 9, 11, 8, 13, 4, 14, 8, 16, 9,...
[ "nonn" ]
A200147
[ 1, 2, 2, 4, 2, 8, 2, 16, 6, 32, 2, 64, 2, 144, 14, 256, 2, 512, 2, 1024, 6, 2048, 2, 4096, 50, 8192, 6, 16384, 2, 34816, 2, 66176, 6, 147456, 130, 262168, 2, 524288, 38, 1048576, 2, 2127872, 2, 4194304, 134, 8388608, 2, 17...
[ "nonn" ]
A298548
[ 1, 5, 4, 33, 341, 4157, 85227, 2586208, 113602418, 7377197638 ]
[ "nonn" ]
A150085
[ 1, 2, 6, 19, 65, 241, 905, 3599, 14425, 59534, 249329, 1056921, 4552398, 19735824, 86589754, 382354053, 1700890992, 7617683252, 34282253718, 155195308290, 705421980080, 3220837523649, 14762428021071, 67892389467223, 313323316552737, 1450092203641912, 6730788726949...
[ "nonn", "walk" ]
A224947
[ 1608, 1636, 1664, 1692, 1704, 1732, 1760, 1788, 1828, 1856, 1884, 1924, 1952, 1980, 2008, 2036, 2064, 2092, 2104, 2132, 2160, 2188, 2228, 2256, 2284, 2324, 2352, 2380, 2408, 2436, 2464, 2492, 2504, 2532, 2560, 2588, 2628, 2656, 2684, 2724...
[ "nonn" ]
A039219
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 61, 62, 63, 64, 6...
[ "nonn", "base", "easy" ]
A336844
[ 1, 1, 1, 7, 1, 1, 1, 3, 1, 1, 1, 5, 5, 1, 1, 61, 3, 1, 1, 7, 5, 1, 1, 1, 29, 5, 5, 5, 1, 1, 5, 23, 11, 3, 1, 101, 11, 1, 7, 3, 3, 5, 1, 23, 1, 1, 7, 91, 67, 29, 1, 59, 1, 5, 1, 1, 5, 1, 1, 5, 9, ...
[ "nonn" ]
A342231
[ 0, 1, 4, 6, 17, 24, 43, 64, 115, 159, 247, 347, 513, 704, 1001, 1350, 1894, 2513, 3408, 4489, 5989, 7786, 10226, 13172, 17079, 21800, 27938, 35362, 44900, 56402, 70959, 88545, 110617, 137108, 170051, 209599, 258328, 316685, 388072, 473331...
[ "nonn" ]
A058247
[ 0, 5, 30, 217, 1715, 14773, 133083, 1240092, 11828689, 114870774, 1131108518, 11262113374, 113154813012, 1145527648610, 11671081869033, 119561821167279, 1230644086228014, 12719597081980340, 131948109440353900, 1373236483865425200, 14333464688936300000, 150001080028881780000...
[ "nonn" ]
A222741
[ 0, 6, 20, 685, 5370, 123410, 1341616, 25106526, 321557310, 5447475968, 76079350800, 1228204709225, 17971182592538, 283558808435910, 4256630623481552, 66474347415079340, 1012439882213494800 ]
[ "nonn" ]
A358072
[ 1, 1, 4, 28, 320, 5360, 123760, 3765440, 145951680, 7019678400, 410164339200, 28615175635200, 2349290700556800, 224201377681881600, 24610071925350910000, 3.078761402543963e+21, 4.354463996552176e+23 ]
[ "nonn" ]
A376274
[ 0, 3, 2, 2, 3, 8, 2, 5, 4, 1, 3, 2, 6, 1, 6, 4, 3, 6, 3, 3, 3, 4, 4, 1, 5, 3, 6, 4, 6, 8, 10, 4, 8, 4, 6, 6, 4, 6, 6, 3, 5, 10, 9, 3, 8, 9, 7, 5, 4, 5, 7, 12, 3, 3, 6, 7, 6, 4, 2, 3, 8, 3, 9, ...
[ "nonn", "base" ]
A337247
[ 25, 809, 23020, 730325, 27867142, 1117643720, 42658771456, 1558395721085, 57260792702050, 2179584653311070, 84835851591609400, 3292250198848240600, 126379831667243970000, 4.841030410501145e+21, 1.868421974431366e+23, 7.269291788529191e+24, 2.8347290203682315e+26 ]
[ "nonn" ]
A235436
[ 167095, 39122513, 9047860107, 2018613731175, 438547192107117, 91649890523565330, 18422944118826040000, 3.5581827228480496e+21, 6.618836030984059e+23, 1.1896256384004726e+26 ]
[ "nonn" ]
A164843
[ 177, 120, 233, 432, 733, 1154, 1731, 2470, 3417, 4584, 6013, 7712, 9731, 12088, 14807, 17940, 21501, 25530, 30021, 35086, 40675, 46840, 53631, 61092, 69251, 78100, 87697, 98084, 109309, 121380, 134377, 148258, 163043 ]
[ "nonn", "more" ]
A137374
[ 2, 1, 4, 1, 6, 1, 8, 8, 1, 20, 10, 1, 16, 36, 12, 1, 56, 56, 14, 1, 32, 128, 80, 16, 1, 144, 240, 108, 18, 1, 64, 400, 400, 140, 20, 1, 352, 880, 616, 176, 22, 1, 128, 1152, 1680, 896, 216, 24, 1, 832, 2912, 2912, ...
[ "nonn", "tabf" ]
A109884
[ 1, 2, 4, 6, 8, 10, 12, 16, 18, 24, 28, 30, 32, 40, 44, 48, 60, 64, 72, 84, 120, 126, 128, 136, 140, 150, 152, 180, 184, 204, 216, 224, 234, 256, 270, 360, 420, 440, 462, 468, 496, 512, 520, 528, 546, 672, 700, 750, 752, ...
[ "easy", "nonn" ]
A134965
[ 3, 12, 19, 28, 35, 44, 51, 60, 67, 76, 83, 92, 99, 108, 115, 124, 131, 140, 147, 156, 163, 172, 179, 188, 195, 204, 211, 220, 227, 236, 243, 252, 259, 268, 275, 284, 291, 300, 307, 316, 323, 332, 339, 348, 355, 364, 371, 3...
[ "nonn", "easy" ]
A233128
[ 528, 1495040, 4653056000, 14800557965312, 47441169369530370, 152534173898504140000, 4.91056502853059e+23, 1.5817109160683224e+27, 5.095889238903797e+30 ]
[ "nonn" ]
A343168
[ 1, 1, 1, 1, 3, 1, 1, 4, 5, 1, 1, 12, 16, 5, 1, 1, 25, 61, 18, 5, 1, 1, 79, 239, 84, 18, 5, 1, 1, 212, 1053, 366, 86, 18, 5, 1, 1 ]
[ "nonn", "more", "tabf" ]
A116048
[ 5, 7, 15, 96 ]
[ "nonn" ]
A042903
[ 1, 2, 3, 17, 530, 2667, 3197, 9061, 564979, 1139019, 1703998, 9659009, 301133277, 1515325394, 1816458671, 5148242736, 321007508303, 647163259342, 968170767645, 5488017097567, 171096700792222, 860971521058677, 1032068221850899, 2925107964760475 ]
[ "nonn", "frac", "easy" ]
A066844
[ 25, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600 ]
[ "nonn" ]
A007354
[ 2, 17, 131, 227, 733, 829, 929, 997, 1097, 1123, 1237, 1277, 1447, 1487, 1531, 1627, 1811, 1907, 1993, 2141, 2203, 2267, 2441, 2677, 2707, 3209, 3299, 3433, 3547, 3853, 4003, 4021, 4507, 4679, 4787, 4931, 5081, 5113, 7537, 7577, 7649, ...
[ "nonn" ]
A326917
[ 0, 2, 3, 5, 7, 8, 9, 12, 14, 15, 18, 20, 21, 23, 24, 25, 27, 29, 32, 33, 34, 35, 38, 42, 44, 45, 47, 48, 52, 53, 54, 57, 59, 60, 62, 63, 65, 70, 71, 74, 75, 77, 78, 79, 80, 84, 88, 89, 90, 92, 93, 96, 98, 99, ...
[ "nonn" ]
A278201
[ 541946240, 47826239745920, 4.9760750604354436e+22, 1.842620787532421e+25, 9.143453047527467e+32, 3.773948771385591e+41, 3.338122818953083e+46, 2.395181537045676e+49 ]
[ "nonn" ]
A207468
[ 10, 100, 358, 1307, 4219, 11760, 33393, 88198, 229458, 590832, 1486909, 3739145, 9312304, 23088739, 57148946, 140903738, 347166896, 854103343, 2099195971, 5157634036, 12663610465, 31086972482, 76294760274, 187208257122 ]
[ "nonn" ]
A196138
[ 1, 0, 0, 1, 4, 1, 2, 3, 3, 2, 1, 8, 4, 8, 1, 1, 14, 19, 19, 14, 1, 3, 19, 31, 31, 31, 19, 3, 3, 46, 70, 165, 165, 70, 46, 3, 2, 56, 117, 251, 326, 251, 117, 56, 2, 4, 133, 253, 931, 1350, 1350, 931, 253, 133, ...
[ "nonn", "tabl" ]
A047638
[ 1, -13, 78, -286, 702, -1131, 845, 1300, -5928, 11583, -13715, 5915, 15834, -47477, 73658, -71201, 20436, 79391, -198796, 280345, -258557, 92807, 200850, -536341, 773916, -768222, 432705, 204477, -979628, 1626196, -1856569, 1471184, -452192 ]
[ "sign" ]
A090246
[ 2, 4, 10, 20, 56 ]
[ "nonn", "more" ]
A068681
[ 313, 757, 131113, 171517, 312931, 393739, 474547, 494749, 575557, 939193, 111109111, 127125127, 139137139, 147145147, 151149151, 169167169, 189187189, 213211213, 217215217, 227225227, 237235237, 239237239, 247245247, 253251253, 269267269, 331329331, 333331333, 3...
[ "base", "easy", "nonn" ]
A358391
[ 2, 3, 10, 234, 2342196 ]
[ "nonn", "hard", "more" ]
A268424
[ 14, 2530, 467899, 92967597, 17282463434, 3197637400309, 577216284723410, 103129350712869060, 18199468798597839000, 3.185845262388985e+21, 5.536019610427727e+23, 9.566318955468667e+25 ]
[ "nonn" ]
A245971
[ 0, 0, 1, 0, 1, 4, 4, 0, 4, 6, 4, 4, 9, 4, 1, 0, 1, 4, 9, 16, 4, 4, 3, 16, 21, 22, 13, 4, 24, 16, 4, 0, 4, 18, 11, 4, 34, 28, 22, 16, 37, 4, 41, 4, 31, 26, 17, 16, 11, 46, 1, 48, 47, 40, 26, 32, 28, 24, ...
[ "nonn", "easy" ]
A316220
[ 1, 1, 3, 3, 9, 21, 46, 95, 273, 363, 731, 3088, 6247, 24152, 46012, 319511, 1141923, 2138064, 7346404, 13530107, 45297804, 271446312 ]
[ "nonn", "more" ]
A053487
[ 1, 5, 26, 142, 824, 5144, 34960, 261104, 2154368, 19651456, 197563136, 2177388800, 26145442816, 339957865472, 4759678552064, 71396252022784, 1142344327331840, 19419870744510464, 349557742120665100, 6641597375170544000, 132831948602922500000 ]
[ "nonn" ]
A357890
[ 422, 1355, 4074, 5460, 31242, 329316, 353648, 1038255, 1246060, 1440679, 4593664, 6382389, 6669205, 6773694, 8748381, 9343041, 10085055, 10711252, 10819136, 12181959, 12804411, 13683806, 14044105, 15616253, 19232028, 20795482, 21014272, 25076295, 26366476, 2...
[ "nonn" ]
A001076
[ 0, 1, 4, 17, 72, 305, 1292, 5473, 23184, 98209, 416020, 1762289, 7465176, 31622993, 133957148, 567451585, 2403763488, 10182505537, 43133785636, 182717648081, 774004377960, 3278735159921, 13888945017644, 58834515230497, 249227005939632, 1055742538989025 ]
[ "nonn", "easy", "cofr", "frac", "nice", "changed" ]
A062420
[ 1, 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 10, 11, 13, 15, 17, 19, 21, 24, 27, 30, 33, 36, 39, 43, 47, 51, 55, 60, 64, 69, 74, 80, 85, 91, 97, 103, 110, 116, 123, 131, 138, 146, 154, 162, 171, 180, 189, 198, 208, 218, 228, ...
[ "nonn", "easy" ]
A164108
[ 4, 0, 5, 8, 7, 1, 2, 1, 2, 6, 4, 1, 6, 7, 6, 8, 2, 1, 8, 1, 8, 5, 0, 1, 3, 8, 6, 2, 0, 2, 9, 3, 7, 9, 6, 3, 5, 4, 0, 5, 3, 1, 6, 0, 6, 9, 6, 9, 5, 2, 2, 5, 9, 0, 3, 8, 1, 1, 1, 6, 0, 8, 0, 7...
[ "cons", "nonn" ]
A014184
[ 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0...
[ "sign", "easy" ]
A086108
[ 2, 3, 5, 7, 12, 21, 113, 115, 131, 151, 311, 511 ]
[ "full", "fini", "nonn", "base" ]
A138916
[ 1, 1, 30, 2385, 273560, 39078970, 6512700536, 1222156339336, 252751878117712, 56798072762849410, 13733835430565198000, 3.548014267149571e+21, 9.740731938452918e+23, 2.8300895062041607e+26 ]
[ "nonn" ]
A323863
[ 1, 2, 8, 486, 64800, 33554250, 68718675672, 562949953420302, 18446744060824780000, 2.4178516392292578e+24, 1.267650600228226e+30, 2.658455991569832e+36, 2.2300745198530623e+43 ]
[ "nonn" ]
A307037
[ 1, 1, 2, 5, 4, 2, 6, 7, 10, 4, 10, 10, 12, 6, 8, 17, 16, 10, 18, 20, 12, 10, 22, 14, 26, 12, 26, 30, 28, 8, 30, 31, 20, 16, 24, 50, 36, 18, 24, 28, 40, 12, 42, 50, 40, 22, 46, 34, 50, 26, 32, 60, 52, 26, 40, ...
[ "nonn", "mult" ]
A348384
[ 1, 6, 36, 40, 216, 224, 240, 1296, 1344, 1408, 1440, 1600, 6656, 7776, 8064, 8448, 8640, 8960, 9600, 34816, 39936, 46656, 48384, 50176, 50688, 51840, 53760, 56320, 57600, 64000, 155648, 208896, 239616, 266240, 279936, 290304, 301056, 304128, ...
[ "nonn" ]
A335307
[ 1, 1, 1, 1, 5, 13, 31, 63, 141, 293, 665, 1553, 3795, 9225, 22257, 53623, 132277, 321651, 786553, 1928565, 4806503, 11885969, 29498995, 73362933, 184210629, 460165983, 1151961103 ]
[ "nonn", "walk", "more" ]
A297482
[ 1, 1, 5, 15050 ]
[ "nonn", "more" ]
A170312
[ 1, 15, 210, 2940, 41160, 576240, 8067360, 112943040, 1581202560, 22136835840, 309915701760, 4338819824640, 60743477544960, 850408685629440, 11905721598812160, 166680102383370240, 2333521433367183400 ]
[ "nonn" ]
A106256
[ 1, 3, 17, 43, 237, 599, 3301, 8343, 45977, 116203, 640377, 1618499, 8919301, 22542783, 124229837, 313980463, 1730298417, 4373183699, 24099948001, 60910591323, 335668973597, 848375094823, 4675265682357, 11816340736199 ]
[ "nonn", "easy" ]
A390418
[ 1, 9, 60, 370, 2235, 13431, 80614, 483720, 2902365, 17414245, 104485536, 626913294, 3761479855, 22568879235, 135413275530, 812479653316, 4874877920049, 29249267520465, 175495605122980, 1052973630738090, 6317841784428771, 37907050706572880, 227442304239437540, 1364653825...
[ "nonn", "easy", "new" ]
A278537
[ 0, 1, 1, 2, 2, 3, 1, 4, 2, 5, 3, 6, 1, 7, 2, 8, 4, 9, 1, 10, 3, 11, 5, 12, 2, 13, 1, 14, 6, 15, 2, 16, 4, 17, 7, 18, 3, 19, 1, 20, 8, 21, 2, 22, 5, 23, 9, 24, 1, 25, 3, 26, 10, 27, 4, 28, 6, 29, 11, ...
[ "nonn" ]
A061333
[ 409, 4441, 12841, 15889, 22751, 30091, 41809, 55921, 60889, 77167, 82183, 99823, 103561, 110281, 120391, 127249, 136471, 139201, 155671, 157351, 161881, 164209, 180361, 180799, 182839, 183823, 187711, 191047, 230929, 250423, 257263, 272191 ]
[ "nonn" ]
A009256
[ 1, 2, 28, 872, 47248, 3907232, 454886848, 70597546112, 14042505449728, 3475021574246912, 1045247734061145100, 375054668796817240000, 1.5808559766332814e+23, 7.726984086469333e+25 ]
[ "nonn" ]
A243147
[ 1, 1, 2, 1, 24, 1, 54, 69, 2, 1, 3100, 1 ]
[ "nonn", "hard", "more" ]
A003879
[ 1, 3, 3, 6, 7, 8 ]
[ "nonn", "fini", "full" ]
A024202
[ 1, 11, 38, 96, 205, 385, 662, 1068, 1635, 2401, 3410, 4706, 6339, 8365, 10840, 13826, 17391, 21603, 26536, 32270, 38885, 46467, 55108, 64900, 75941, 88335, 102186, 117604, 134705, 153605, 174426, 197296, 222343, 249701, 279510, 311910, 347047, ...
[ "nonn" ]
A354968
[ 1, 4, 5, 10, 16, 14, 20, 35, 40, 30, 35, 64, 81, 80, 55, 56, 105, 140, 154, 140, 91, 84, 160, 220, 256, 260, 224, 140, 120, 231, 324, 390, 420, 405, 336, 204, 165, 320, 455, 560, 625, 640, 595, 480, 285, 220, 429, 616, 7...
[ "nonn", "easy", "tabl" ]
A010308
[ 4, 3, 4, 4, 1, 3, 1, 9, 1, 5, 1, 4, 115, 2, 4, 8, 3, 3, 4, 1, 1, 2, 1, 2, 1, 1, 3, 1, 5, 1, 9, 3, 4, 1, 2002, 1, 1, 2, 1, 2, 1, 1, 4, 2, 7, 1, 6, 55, 1, 3, 1, 10, 2, 5, 1, 1, 4, 4, 9, 30, 1, 51,...
[ "nonn", "cofr" ]
A179781
[ 1, 1, 1, 2, 3, 5, 7, 12, 14, 27, 31, 54, 63, 119, 123, 240, 255, 490, 511, 990, 1015, 2015, 2047, 4020, 4092, 8127, 8176, 16254, 16383, 32607, 32767, 65280, 65503, 130815, 131061, 261576, 262143, 523775, 524223, 1047540, 1048575, 2096...
[ "nonn" ]
A037322
[ 1, 2, 3, 4, 45, 46, 47, 66, 67, 68, 69, 85, 86, 87, 88, 89, 145, 146, 147, 148, 149, 168, 169, 186, 187, 188, 189, 225, 226, 227, 265, 266, 267, 268, 269, 306, 307, 308, 309, 325, 326, 327, 328, 329, 370, 371, 408, 409, ...
[ "nonn", "base" ]
A043476
[ 4100, 10661, 17222, 23783, 30344, 33260, 33989, 34718, 35447, 36176, 36500, 36581, 36662, 36743, 36824, 36860, 36869, 36878, 36887, 36896, 36900, 36901, 36902, 36903, 36904, 36906, 36907, 36908, 36914, 36923, 36932 ]
[ "nonn", "base" ]
A064703
[ 3, 9, 63, 189, 729, 729, 2187, 35721, 45927, 413343, 413343, 2657205, 3720087, 4782969, 33480783, 100442349, 387420489, 387420489, 1162261467 ]
[ "nonn" ]
A260007
[ 36, 98, 889, 8450, 87024, 1210568, 33390411, 1002982472, 36725478315, 1784334292232, 146147465448539, 13711953572564552, 1749785434450518300, 284207752803358740000, 7.177982739934154e+22 ]
[ "nonn" ]
A347725
[ 1, 4, 10, 25, 64, 163, 415, 1057, 2692, 6856, 17461, 44470, 113257, 288445, 734617, 1870936, 4764934, 12135421, 30906712, 78713779, 200469691, 510559873, 1300303216, 3311635996, 8434135081, 21480209374, 54706189825, 139326724105, 354839847409, 903712608748 ]
[ "nonn", "easy" ]
A336818
[ 4, 8, 4, 8, 12, 4, 8, 32, 12, 4, 8, 64, 36, 12, 4, 8, 104, 96, 36, 12, 4, 8, 176, 240, 100, 36, 12, 4, 8, 296, 520, 280, 100, 36, 12, 4, 0, 496, 1048, 728, 284, 100, 36, 12, 4, 0, 848, 2104, 1816, 776, 184, 100, ...
[ "nonn", "walk", "tabl" ]
A259690
[ 1, 1, 3, 10, 38, 154, 645, 2853, 12844, 58985 ]
[ "dead" ]
A028917
[ 1, 105, 50400, 64864800, 174356582400, 844757641728000, 6690480522485760000, 8.078755230901556e+22, 1.4115201139431196e+27, 3.4261827725741346e+31, 1.1183060569681976e+36, 4.779080934453592e+40 ]
[ "nonn", "easy" ]
A380409
[ 1, 3, 5, 5, 8, 7, 11, 7, 10, 10, 16, 9, 19, 13, 14, 9, 24, 12, 27, 12, 18, 18, 32, 11, 19, 21, 17, 15, 39, 16, 42, 11, 24, 26, 24, 14, 49, 29, 28, 14, 54, 20, 57, 20, 23, 34, 62, 13, 30, 21, 34, 23, 69, 19, 3...
[ "nonn" ]
A266117
[ 1, 2, 3, 4, 5, 10, 11, 6, 7, 12, 8, 9, 24, 13, 18, 19, 26, 14, 17, 22, 21, 16, 15, 32, 30, 20, 23, 29, 42, 28, 25, 48, 34, 53, 41, 54, 27, 40, 33, 36, 37, 61, 65, 44, 49, 72, 39, 38, 51, 52, 55, 59, 47, 46, 5...
[ "nonn", "base" ]
A386508
[ 1, 1, 3, 295, 287917, 1475577461, 27675935977381, 1506650312499716400, 2.0259022842112742e+23, 5.974811281113769e+28, 3.5281260624146464e+34, 3.880977478372374e+40, 7.500470218395162e+46 ]
[ "nonn" ]
A275558
[ 1, 1, 2, 6, 31, 195, 2182, 30100, 529674, 10778125, 250155012, 6484839306, 185757443582, 5824538174455, 198428907905336, 7298232189810696, 288230385949610050, 12165298000307626000, 546477890436083300000, 2.6031837576091247e+22, 1.310720000028416e+24 ]
[ "nonn" ]
A213653
[ 0, 10, 10001, 21, 4, 14, 6, 25, 26, 9, 46, 38, 39, 49, 77, 69, 169, 278, 0, 289, 299, 489, 589, 689, 699, 799, 899, 0, 2899, 3899, 4989, 5899, 5999, 6999, 7999, 9899, 0, 19999, 29999, 48999, 58999, 68999, 69999, 88999, 99899, ...
[ "easy", "base", "nonn" ]
A100425
[ 4, 6, 8, 9, 12, 14, 18, 21, 25, 26, 35, 36, 50, 52, 56, 66, 68, 74, 77, 95, 96, 98, 108, 118, 141, 143, 146, 162, 166, 176, 185, 186, 187, 203, 207, 228, 235, 245, 250, 254, 273, 275, 285, 290, 295, 302, 322, 340, 350, ...
[ "nonn" ]
A296615
[ 1, 9, 8, 19, 18, 26, 27, 91, 38, 39, 47, 46, 53, 52, 60, 61, 64, 65, 73, 72, 83, 82, 90, 130, 131, 139, 138, 145, 144, 152, 153, 217, 164, 124, 103, 102, 110, 111, 116, 117, 125, 165, 173, 172, 183, 182, 190, 191, 194, ...
[ "nonn", "base" ]
A367331
[ 1, 24, 657, 17664, 477828, 12888288, 348197220, 9397548288, 253804616001, 6851337236952, 185014241769825, 4994797849546752, 134872057740184130, 3641273395825798700, 98320397048549300000, 2.654515896013953e+21, 7.167498801861215e+22 ]
[ "nonn" ]
A116771
[ 1, 2, 6, 21, 74, 237, 668, 1667, 3750, 7743, 14898, 27033, 46698, 77369, 123672, 191639, 288998, 425499, 613278, 867261, 1205610, 1650213, 2227220, 2967627, 3907910, 5090711, 6565578, 8389761, 10629066, 13358769, 16664592, 20643743, 25406022, 3107499...
[ "nonn", "easy" ]
A306722
[ 1, 1, 2, 1, 1, 2, 1, 1, 1, 3, 0, 3, 1, 1, 1, 1, 0, 3, 0, 3, 1, 1, 0, 3, 1, 1, 4, 3, 0, 3, 0, 1, 4, 0, 1, 3, 1, 0, 0, 3, 0, 3, 0, 1, 4, 0, 1, 3, 0, 1, 0, 1, 0, 2, 1, 2, 0, 2, 0, 5, 0, 1, 4, 0...
[ "nonn" ]
A183484
[ 1, 28, 281, 17260, 9580528, 2596400089 ]
[ "nonn" ]
A029195
[ 1, 0, 1, 0, 1, 1, 2, 1, 2, 2, 3, 3, 4, 3, 5, 5, 6, 6, 8, 7, 10, 9, 11, 11, 14, 13, 16, 16, 18, 19, 22, 21, 25, 25, 28, 29, 33, 32, 37, 37, 41, 42, 47, 46, 52, 53, 57, 59, 64, 64, 71, 72, 77, 79, 86, 86, 9...
[ "nonn", "easy" ]
A283669
[ 0, -1, -1, 0, -1, -1, 0, 0, 0, 0, -2, 0, 0, -1, 0, -1, -1, 0, 0, 0, 0, 0, -2, 2, 0, 0, 0, 0, 0, -1, 1, 0, -1, 1, 2, 0, -1, 0, -1, -1, 0, 0, 0, 0, 0, 0, -4, 3, -2, -4, 2, 2, -2, 0, 0, -2, 0, 0, 0, 0,...
[ "sign" ]
A231039
[ 0, 2, 10, 72, 736, 9726, 96882, 1194032, 13187232, 153259946, 1737128710, 19948288212, 227507930240, 2603987906862, 29749619767922, 340201024608192, 3888458795003620, 44455865446152200, 508187478024077760 ]
[ "nonn" ]
A138756
[ 1, 2, 3, 8, 11, 17, 18, 27, 42, 72, 125, 219, 221, 401, 515, 556, 754, 841, 1146 ]
[ "nonn", "hard", "more" ]
A031638
[ 626, 15901, 31378, 51157, 52522, 77405, 107753, 109069, 141601, 142354, 143866, 146149, 182618, 183473, 185189, 226937, 230761, 336929, 340418, 392501, 393754, 396266, 398786, 400049, 402581, 406394, 465853, 474073, 536665, 542537, 545485 ]
[ "nonn" ]
A053529
[ 1, 1, 4, 18, 120, 840, 7920, 75600, 887040, 10886400, 152409600, 2235340800, 36883123200, 628929100800, 11769069312000, 230150688768000, 4833164464128000, 105639166144512000, 2464913876705280000, 59606099200327680000, 1.5254295591267533e+21, 4.046402619999388e+22 ]
[ "nonn", "easy", "nice" ]
A293809
[ 1, 2, 7, 22, 73, 240, 818, 2824, 10004, 36252, 134594, 512632, 2002797, 8037634, 33122211, 140287074, 610344666, 2728599114, 12524559427, 59014996342, 285169596358, 1412357461074, 7161541766341, 37150562120334, 196945057245451, 1066104659977212 ]
[ "nonn" ]
A222228
[ 0, 1, 4, 3, 2, 5, 6, 7, 8, 9, 10, 11, 14, 13, 12, 15, 16, 17, 18, 19, 40, 41, 44, 43, 42, 45, 46, 47, 48, 49, 30, 31, 34, 33, 32, 35, 36, 37, 38, 39, 20, 21, 24, 23, 22, 25, 26, 27, 28, 29, 50, 51, 54, 53, 52...
[ "nonn", "base", "easy" ]
A242532
[ 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 20, 39, 0, 0, 0, 0, 319, 967, 0, 0, 1464, 6114, 16856, 44370, 0, 0, 0, 0, 2032951, 8840796, 12791922, 101519154, 0, 0 ]
[ "nonn", "hard", "more" ]
A342996
[ 1, 2, 11, 5604, 9275102575355, 2.1565010821742925e+49 ]
[ "nonn" ]
A229104
[ 1024, 974864, 818683176, 531085813392, 322730734532144, 191717335254838000, 113048691194875940000, 6.64903683289061e+22, 3.907165415424484e+25, 2.2952339279947828e+28 ]
[ "nonn" ]
A265814
[ 5, 13, 19, 307, 443, 617, 2237, 2411, 2971, 5923, 7043, 7603, 11887, 12659, 15361, 24103, 75223, 89021, 128273, 283949, 423299, 1169027, 1587077, 1830211, 3062207, 5080939, 8481901, 9366979, 22675801, 67090433, 71625049, 191016521, 211670869, 2215787...
[ "nonn", "frac" ]
A234411
[ 14012832, 2732474648, 478670480044, 126450980383644, 34542252827375948, 10820186584040210000, 3.466835805859167e+21, 1.161229782833381e+24, 3.916037917513439e+26, 1.3421455392186018e+29 ]
[ "nonn" ]
A175011
[ 1, 1, 2, 1, 2, 5, 1, 2, 2, 16, 1, 2, 2, 5, 45, 1, 2, 2, 2, 12, 125, 1, 2, 2, 2, 5, 24, 341, 1, 2, 2, 2, 2, 12, 48, 918, 1, 2, 2, 2, 2, 7, 18, 97, 2453, 1, 2, 2, 2, 2, 2, 16, 28, 195, 6515 ]
[ "nonn", "tabl" ]
A254538
[ 5, 28, 163, 1026, 6814, 45472, 297210, 1936867, 12941917, 88456127, 605472534, 4098451778, 27532173631, 186053199184, 1280442885415, 8972454019845, 63101697125668, 438054873198566, 2987530815338138, 20248691923570270 ]
[ "nonn" ]
A064243
[ 96, 1656, 2280, 5556, 6960, 7506, 8286, 12420, 12966, 15540, 17490, 23496, 26226, 28410, 32076, 33870, 42060, 53526, 57036, 61560, 67956, 73416, 89796, 104850, 107580, 108516, 122166, 124350, 126690, 132150, 143616, 148920 ]
[ "nonn" ]
A368343
[ 1, 1, 1, 1, 2, 1, 1, 3, 3, 2, 1, 4, 7, 5, 2, 1, 5, 13, 16, 7, 2, 1, 6, 21, 41, 34, 9, 3, 1, 7, 31, 86, 125, 70, 12, 3, 1, 8, 43, 157, 346, 377, 143, 15, 3, 1, 9, 57, 260, 787, 1386, 1134, 289, 18, 4, 1, 1...
[ "nonn", "tabl" ]
A295287
[ 0, 0, 0, 4, 6, 8, 10, 28, 34, 40, 46, 88, 100, 112, 124, 200, 220, 240, 260, 380, 410, 440, 470, 644, 686, 728, 770, 1008, 1064, 1120, 1176, 1488, 1560, 1632, 1704, 2100, 2190, 2280, 2370, 2860, 2970, 3080, 3190, 3784, 3916, 4...
[ "nonn", "easy" ]
A103022
[ 3, 5, 6, 21, 309, 816, 858, 1115, 1419, 1689, 12009, 18693, 28098, 90965 ]
[ "more", "nonn" ]
A351266
[ 1, 9, 28, 9, 126, 252, 344, 9, 28, 1134, 1332, 252, 2198, 3096, 3528, 9, 4914, 252, 6860, 1134, 9632, 11988, 12168, 252, 126, 19782, 28, 3096, 24390, 31752, 29792, 9, 37296, 44226, 43344, 252, 50654, 61740, 61544, 1134, 68922, 86688, ...
[ "nonn", "mult" ]
A058951
[ 12, 14, 113, 123, 125, 135, 145, 153, 155, 163, 1032, 1052, 1062, 1112, 1124, 1152, 1154, 1214, 1242, 1262, 1264, 1304, 1314, 1322, 1334, 1352, 1354, 1362, 1422, 1432, 1434, 1444, 1504, 1524, 1532, 1534, 1542, 1552, 1564, 1604, 1612, ...
[ "nonn", "easy", "nice" ]