id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A263886
[ 3, 56, 753, 9024, 104814, 1228608, 14824314, 185991936, 2438459325, 33476112000, 481470208575, 7252002478080, 114295913943660, 1882806417303552, 32377593994012260, 580478495476949000, 10835925949596420000, 210343353555466220000, 4.24067355927954e+21 ]
[ "nonn" ]
A141464
[ 2, 11, 27, 38, 86, 93, 188, 323 ]
[ "nonn" ]
A289229
[ 1, 1, 1, 1, 2, 0, 1, 3, 3, 2, 1, 5, 14, 19, 4, 0, 1, 7, 40, 127, 159, 77, 17, 0, 1, 9, 90, 536, 1644, 2569, 1876, 500, 42, 1, 1, 12, 175, 1688, 9548, 31951, 62171, 67765, 39459, 11579, 1547, 47, 0, 1, 15, 308, 4357, 38872, 223346, 832628, 2005948, 3072004, 2897626 ]
[ "tabf", "nonn" ]
A137279
[ 1, 4, 0, 16, 40, 192, 560, 3328, 11772, 63840, 259336, 1550976, 7169656, 42410256, 234044160, 1366190592 ]
[ "nonn", "more" ]
A227854
[ 12, 27, 28, 52, 63, 75, 76, 117, 124, 147, 148, 171, 172, 175, 244, 268, 273, 279, 292, 316, 325, 333, 343, 363, 387, 388, 399, 412, 436, 475, 507, 508, 549, 556, 603, 604, 628, 637, 651, 652, 657, 711, 724, 741, 772, 775, 777, 796, 844, 847, 867, 873, 892 ]
[ "nonn", "easy" ]
A366242
[ 1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 26, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 41, 42, 43, 46, 47, 48, 51, 53, 55, 57, 58, 59, 61, 62, 65, 66, 67, 69, 70, 71, 73, 74, 77, 78, 79, 80, 81, 82, 83, 85, 86, 87, 89, 91, 93, 94, 95, 96, 97 ]
[ "nonn", "easy" ]
A099849
[ 1, 2, 3, 4, 5, 7, 8, 9, 10, 12, 13, 16, 17, 19, 21, 22, 23, 26, 27, 30, 32, 34, 35, 39, 40, 42, 43, 46, 47, 53, 54, 55, 57, 59, 61, 67, 68, 70, 72, 76, 77, 83, 84, 87, 90, 92, 93, 98, 99, 102, 104, 107, 108, 112, 114, 118, 120, 122, 123, 135, 136, 138, 141, 142, 144, 150 ]
[ "nonn", "easy" ]
A214744
[ 1, 2, 2, 3, 4, 3, 4, 3, 1, 8, 6, 6, 8, 8, 6, 4, 6, 4, 4, 6, 4, 4, 3, 15, 18, 2, 2, 3, 3, 15, 18, 15, 22, 17, 18, 15, 14, 15, 14, 17, 18, 11, 14, 15, 22, 11, 6, 7, 8, 9, 8, 11, 45, 7, 6, 45, 46, 7, 54, 9, 6, 42, 45, 46, 4, 42, 1, 30, 42, 45, 45, 42, 42, 42, 45, 45, 42, 45, 42 ]
[ "nonn", "easy" ]
A134223
[ 8, 24, 36, 65, 80, 89, 108, 145, 161, 233, 260, 353, 377, 441, 449, 505, 521, 528, 537, 649, 681, 737, 745, 784, 792, 1100, 1116, 1224, 1296, 1412, 1513, 1536, 1548, 1585, 1753, 1897, 1961, 2025, 2033, 2185, 2250, 2305, 2404, 2521, 2537, 2745, 2793, 2852 ]
[ "nonn" ]
A055813
[ 2, 5, 19, 263, 373, 1033, 65551, 123833, 283553, 292993, 2197633, 5778673, 12795193, 10500613, 19980283, 32213033, 36978853, 72494813, 140724953, 164119063, 183105509, 193710277, 320210941, 450065801, 268354393, 496922891, 506906473, 1333406021 ]
[ "nonn" ]
A156251
[ 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 6, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 19, 19, 19, 20, 20, 21, 21, 21, 21, 22, 22, 22, 23, 23, 24, 24, 24, 25, 25, 25, 25, 26, 26, 26, 26 ]
[ "nonn" ]
A055145
[ 1, 6, 27, 109, 436, 1745, 6981, 27925, 111702, 446809, 1787239, 7148958, 28595832, 114383330, 457533321, 1830133286, 7320533146, 29282132586, 117128530347, 468514121391, 1874056485564, 7496225942259, 29984903769037 ]
[ "nonn", "base" ]
A170775
[ 0, 1, 1152, 91854, 2129920, 24609375, 182238336, 991545772, 4303355904, 15712053165, 50050000000, 142763014746, 371719176192, 896488062379, 2025520479360, 4326159375000, 8798240505856, 17139436032537, 32139715019904, 58253621230630, 102412800000000, 175157661700791 ]
[ "nonn", "easy" ]
A354440
[ 294001, 604171, 971767, 2690201, 10564877, 104097043, 354975121, 1378229029, 1444623667, 1594371379, 3979115747, 15737262803, 22090236251, 28198307351, 35373071549, 49430022721, 67580736437, 142243533671, 659956292591, 1385321944133 ]
[ "nonn", "base", "more" ]
A222838
[ 1, 2, 2, 3, 7, 3, 7, 24, 24, 7, 19, 96, 72, 96, 19, 55, 384, 216, 216, 384, 55, 163, 1536, 648, 600, 648, 1536, 163, 487, 6144, 1944, 1536, 1536, 1944, 6144, 487, 1459, 24576, 5832, 4056, 4032, 4056, 5832, 24576, 1459, 4375, 98304, 17496, 10584, 9600, 9600, 10584 ]
[ "nonn", "tabl" ]
A146361
[ 191, 311, 431, 647, 1319, 1487, 2351, 5527, 9431, 19087, 21143, 24359, 27239, 29207, 32183, 34367, 36791, 38711, 41759, 42071, 43063, 43319, 49367, 58271, 58391, 59399, 62327, 65183, 66239, 77543, 82759, 84263, 87407, 90271, 93967, 94463, 97127, 100703, 101063 ]
[ "nonn" ]
A154663
[ 3, 5, 6, 7, 10, 11 ]
[ "nonn" ]
A316699
[ 2, 4, 8, 14, 20, 38, 70, 134, 240, 442, 814, 1502, 2756, 5070, 9326, 17158, 31552, 58034, 106742, 196334, 361108, 664182, 1221622, 2246918, 4132720, 7601258, 13980894, 25714878, 47297028, 86992798, 160004702, 294294534, 541292032, 995591266, 1831177830, 3368061134, 6194830228 ]
[ "nonn", "easy" ]
A006018
[ 1, 2, 4, 2, 12, 12, 12, 8, 8, 10, 60, 60, 84, 84, 84, 16, 16, 18, 180, 20, 900, 7200, 7200, 24, 24, 26, 364, 364, 2184 ]
[ "hard", "nonn", "more" ]
A353200
[ 1, 0, 0, 0, 0, 120, 1800, 21000, 235200, 2693880, 35947800, 609615600, 12504927600, 281242996320, 6545492073120, 155873050569600, 3849612346944000, 100588974863402880, 2818516832681523700, 84728757269204860000, 2.7065166900471886e+21 ]
[ "nonn" ]
A118583
[ 1, 5, 53, 789, 237493, 2576561, 338350897, 616410400171, 2603853251291, 5745400286707685, 3081677433937346600, 41741941495866750000, 7.829195555633965e+21, 2.106613197005666e+25 ]
[ "nonn" ]
A281687
[ 1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 6, 7, 7, 9, 8, 9, 8, 9, 9, 11, 10, 12, 10, 11, 10, 12, 11, 13, 10, 11, 12, 13, 12, 15, 13, 12, 13, 13, 12, 15, 14, 14, 14, 16, 15, 19, 16, 16, 16, 17, 15, 19, 15, 18, 16, 19, 16, 20, 18, 19, 18, 20, 17, 22, 19, 21, 18, 21, 19, 22 ]
[ "nonn", "look" ]
A187188
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 4, 4, 4, 4, 4, 5, 6, 5, 5, 6, 5, 5, 6, 5, 5, 6, 5, 5, 6, 7, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 10, 11, 12, 12, 12, 12, 12, 13, 12, 12, 12, 12 ]
[ "nonn" ]
A254725
[ 185287, 1645201, 21750375, 264545705, 2863637632, 32722394252, 369393588378, 4105206149596, 46009312739781, 517739890498970, 5810024681391281, 65212837594860904, 732688861896573000, 8231461829911358000 ]
[ "nonn" ]
A232502
[ 0, 0, 0, 0, 1, 1, 1, 2, 1, 2, 1, 3, 2, 1, 2, 3, 1, 5, 2, 3, 1, 4, 5, 3, 4, 2, 3, 2, 3, 5, 5, 3, 7, 1, 5, 4, 8, 3, 4, 5, 6, 5, 1, 6, 4, 9, 3, 8, 4, 6, 3, 10, 5, 8, 4, 8, 3, 9, 6, 4, 4, 4, 10, 6, 10, 4, 11, 5, 11, 6, 9, 5, 10, 9, 8, 6, 9, 7, 9, 11, 9, 11, 5, 10, 9, 12, 6, 6, 10, 9, 8, 13, 4, 12, 10, 12, 8, 7, 12, 14 ]
[ "nonn" ]
A349322
[ 1, 3, 2, 4, 2, 5, 2, 12, 11, 5, 2, 18, 2, 5, 4, 13, 2, 32, 2, 7, 4, 5, 2, 50, 3, 5, 12, 7, 2, 9, 2, 14, 4, 5, 4, 81, 2, 5, 4, 55, 2, 9, 2, 7, 14, 5, 2, 52, 3, 7, 4, 7, 2, 34, 4, 71, 4, 5, 2, 83, 2, 5, 14, 15, 4, 9, 2, 7, 4, 9, 2, 185, 2, 5, 6, 7, 4, 9, 2, 136, 13, 5, 2, 107 ]
[ "nonn" ]
A124470
[ 1, 2, 5, 16, 63, 288, 1461, 8013, 46896, 290916, 1905162, 13131193, 95005565, 719862361, 5700083435, 47075439047, 404760508374, 3617018777976, 33539368302476, 322222320833572, 3202873385842352, 32895350423011348 ]
[ "nonn" ]
A235654
[ 52, 276, 1368, 6378, 28823, 126926, 550175, 2355552, 10004536, 42235174, 177579946, 744429835, 3114442287, 13010940991, 54301263895, 226468945249, 944063980856, 3934142359952, 16390818551843, 68278377411075 ]
[ "nonn" ]
A063929
[ 2, 6, 3, 12, 8, 4, 20, 15, 10, 5, 30, 24, 18, 12, 6, 42, 35, 28, 21, 14, 7, 56, 48, 40, 32, 24, 16, 8, 72, 63, 54, 45, 36, 27, 18, 9, 90, 80, 70, 60, 50, 40, 30, 20, 10, 110, 99, 88, 77, 66, 55, 44, 33, 22, 11, 132, 120, 108, 96, 84, 72, 60, 48, 36, 24, 12, 156, 143, 130, 117 ]
[ "easy", "nonn", "tabl" ]
A316158
[ 1, 1, 5, 33, 280, 2883, 34817, 481477, 7489454, 129259662, 2448516959, 50460561330, 1123192711285, 26838555204646, 684871918806173, 18580595826856936, 533846105922876860, 16187892824592957000, 516492582419620300000, 1.7292646954057123e+22, 6.060757690329145e+23 ]
[ "nonn" ]
A052606
[ 1, 2, 16, 180, 2688, 50160, 1123200, 29342880, 876072960, 29425939200, 1098191001600, 45083550758400, 2019049224192000, 97957525739673600, 5118154482618778000, 286518188551795200000, 1.7108806991486386e+22 ]
[ "easy", "nonn" ]
A194598
[ 2, 3, 13, 19, 31, 43, 53, 61, 71, 73, 101, 103, 109, 113, 131, 139, 151, 157, 173, 181, 191, 193, 199, 229, 233, 239, 241, 251, 269, 271, 283, 293, 311, 313, 349, 353, 373, 379, 409, 419, 421, 433, 439, 443, 463, 491, 499, 509, 523, 571, 577, 593, 599, 601 ]
[ "nonn" ]
A313277
[ 1, 4, 9, 15, 21, 25, 29, 35, 41, 46, 49, 52, 59, 67, 72, 75, 78, 83, 90, 96, 100, 104, 109, 115, 121, 125, 128, 133, 140, 146, 150, 154, 159, 165, 170, 173, 178, 185, 191, 196, 199, 202, 208, 215, 221, 225, 228, 233, 240, 246 ]
[ "nonn" ]
A272541
[ 1, 6, 19, 51, 92, 168, 245, 409, 546, 786, 959, 1387, 1636, 2156, 2473, 3273, 3678, 4570, 5095, 6343, 6932, 8340, 9073, 10897, 11734, 13746, 14771, 17255, 18396, 21096, 22425, 25701, 27166, 30678, 32359, 36531, 38356, 42780, 44869, 50033, 52258, 57714, 60239 ]
[ "nonn", "easy" ]
A114984
[ 200, 199, 442, 441, 684, 683, 926, 925, 1168, 1167, 1410, 1409, 1652, 1651, 1894, 1893, 2136, 2135, 2378, 2377, 2620, 2619, 2862, 2861, 3104, 3103, 3346, 3345, 3588, 3587, 3830, 3829, 4072, 4071, 4314, 4313, 4556, 4555, 4798, 4797, 5040, 5039, 5282 ]
[ "nonn", "uned", "easy" ]
A316540
[ 4, 12, 26, 53, 187, 484, 1262, 3570, 9751, 26557, 72773, 199700, 546815, 1496934, 4102867, 11240497, 30788845, 84352649, 231098249, 633098685, 1734421624, 4751634729, 13017502145, 35662487018, 97700580311, 267659337870 ]
[ "nonn" ]
A160491
[ 7, 235, 16141, 48811741, 13011865891, 232617453293191, 143882557561868670, 8.862794004464426e+21, 9.999999113706189e+28, 1.918434249577505e+32 ]
[ "nonn" ]
A279416
[ 0, 0, 1, 0, 2, 3, 0, 3, 5, 6, 0, 4, 6, 9, 10, 0, 5, 8, 11, 14, 15, 0, 6, 9, 12, 16, 20, 21, 0, 7, 11, 15, 19, 23, 27, 28, 0, 8, 12, 17, 20, 26, 30, 35, 36, 0, 9, 14, 18, 24, 29, 33, 39, 44, 45, 0, 10, 15, 21, 26, 30, 37, 43, 48, 54, 55, 0, 11, 17, 23, 29, 35 ]
[ "nonn", "tabl", "easy" ]
A249097
[ 1, 3, 64, 192, 729, 2187, 4096, 12288, 15625, 46656, 46875, 117649, 139968, 262144, 352947, 531441, 786432, 1000000, 1594323, 1771561, 2985984, 3000000, 4826809, 5314683, 7529536, 8957952, 11390625, 14480427, 16777216, 22588608, 24137569, 34012224, 34171875 ]
[ "nonn", "easy" ]
A231743
[ 50, 1328, 60806, 2154900, 71742015, 2426463539, 82701946547, 2814528154294, 95747933760688, 3259127333943936, 110951853201769470, 3776779941421524000, 128555070606110230000, 4.375838168986253e+21, 1.4894882249441135e+23 ]
[ "nonn" ]
A346384
[ 1, 1, 1, 27, 20, 1, 6291, 4719, 221, 1, 13589289, 10191960, 477750, 2120, 1, 266377183929, 199782888129, 9364822830, 41559870, 19481, 1, 47123189360124720, 35342392020078780, 1656674625945339, 7352106327720, 3446299857, 176540, 1 ]
[ "nonn", "tabl" ]
A335228
[ 1, 1, -3, -2, 9, 0, -32, 18, 108, -118, -333, 576, 911, -2466, -2040, 9702, 2529, -35622, 8254, 122436, -88275, -391882, 501660, 1148334, -2331810, -2949282, 9689949, 5791930, -37155906, -2645148, 133051344, -54698868, -445531893, 408566282, 1383325848, -2115234972 ]
[ "sign" ]
A105547
[ 1, 0, 0, 0, 0, 0, 0, 0, 759, 0, 12144, 0, 172592, 61824, 765072, 1133440, 1239447, 4080384, 1445136, 4080384, 1870176, 1133440, 692208, 61824, 28385 ]
[ "nonn", "fini", "easy", "full" ]
A021709
[ 0, 0, 1, 4, 1, 8, 4, 3, 9, 7, 1, 6, 3, 1, 2, 0, 5, 6, 7, 3, 7, 5, 8, 8, 6, 5, 2, 4, 8, 2, 2, 6, 9, 5, 0, 3, 5, 4, 6, 0, 9, 9, 2, 9, 0, 7, 8, 0, 1, 4, 1, 8, 4, 3, 9, 7, 1, 6, 3, 1, 2, 0, 5, 6, 7, 3, 7, 5, 8, 8, 6, 5, 2, 4, 8, 2, 2, 6, 9, 5, 0, 3, 5, 4, 6, 0, 9, 9, 2, 9, 0, 7, 8, 0, 1, 4, 1, 8, 4 ]
[ "nonn", "cons", "easy" ]
A303485
[ 1, 1, 1, 8, 66, 512, 5269, 57459, 711742, 9610222, 139735699, 2183555015, 36543300668, 649320343729, 12174674648730, 240360451018461, 4975239937954534, 107600744797471150, 2426579187889853000, 56901290353169050000, 1.384258146777833e+21 ]
[ "nonn" ]
A249000
[ 27740, 189660, 1298968, 8902860, 61034658, 418454994, 2869206494, 19673497892, 134897701458, 924972633722, 6342399495490, 43489021952576, 298198855766202, 2044713089447888, 14020347915273238, 96135813057541120, 659191600029773700 ]
[ "nonn" ]
A057855
[ 1, 3, 6, 9, 16, 21, 30, 36, 46, 61, 68, 86, 99, 110, 126, 146, 168, 184, 205, 223, 242, 270, 292, 321, 360, 381, 404, 429, 446, 477, 546, 574, 614, 637, 693, 717, 762, 804, 842, 890, 935, 965, 1029, 1059, 1105, 1134, 1222, 1304, 1348, 1381, 1423, 1483 ]
[ "nonn" ]
A049394
[ 1, 30, 825, 22000, 577500, 15015000, 387887500, 9974250000, 255590156250, 6531748437500, 166559585156250, 4239698531250000, 107759004335937500, 2735420879296875000, 69362458010742190000, 1.7571822696054687e+21 ]
[ "nonn", "easy" ]
A075740
[ 1, 55, 377, 17711, 121393, 5702887, 139583862445, 1304969544928657, 5527939700884757, 259695496911122600, 679891637638612200, 12200160415121877000, 19740274219868220000, 31940434634990100000 ]
[ "easy", "nonn" ]
A069616
[ 4, 41, 241, 2411, 32411, 324113, 6324113, 63241133, 1563241133, 15632411339, 815632411339, 81563241133919, 281563241133919, 2815632411339191, 322815632411339200, 32281563241133920000, 432281563241133900000 ]
[ "nonn", "base" ]
A102885
[ 1, 2, 1, 2, 3, 3, 4, 4, 5, 6, 7, 5, 8, 6, 9, 10, 11, 7, 12, 8, 13, 14, 15, 9, 16, 17, 18, 19, 20, 10, 21, 11, 22, 23, 24, 25, 26, 12, 27, 28, 29, 13, 30, 14, 31, 32, 33, 15, 34, 35, 36, 37, 38, 16, 39, 40, 41, 42, 43, 17, 44, 18, 45, 46, 47, 48, 49, 19, 50, 51, 52, 20, 53, 21, 54 ]
[ "nonn", "easy" ]
A026606
[ 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2 ]
[ "nonn" ]
A164305
[ 3, 17, 81, 367, 1635, 7241, 32001, 141319, 623907, 2754209, 12157905, 53667967, 236902467, 1045739033, 4616116929, 20376528343, 89946351555, 397042410929, 1752630004689, 7736483151631, 34150488876963, 150747551200361, 665431885063425, 2937358451978023 ]
[ "nonn", "easy" ]
A162723
[ 1, 1, 2, 16, 116, 676, 3452, 16276, 72956, 316276, 1340252, 5590036, 23054396, 94314676, 383578652, 1553331796, 6270493436, 25253701876, 101530450652, 407669649556, 1635323974076, 6555235693876, 26262769508252 ]
[ "nonn" ]
A120175
[ 7, 8, 10, 12, 14, 17, 20, 24, 29, 35, 42, 50, 60, 72, 87, 104, 125, 150, 180, 216, 259, 311, 373, 448, 537, 645, 774, 928, 1114, 1337, 1604, 1925, 2310, 2772, 3326, 3992, 4790, 5748, 6898, 8277 ]
[ "nonn" ]
A082218
[ 1, 3, 5, 6, 7, 2, 10, 12, 8, 4, 9, 14, 13, 16, 19, 25, 15, 37, 21, 23, 11, 20, 17, 22, 29, 26, 35, 24, 28, 36, 18, 32, 38, 44, 40, 48, 31, 56, 33, 68, 43, 50, 39, 34, 41, 27, 47, 61, 53, 57, 45, 75, 85, 93, 55, 30, 49, 65, 63, 72, 67, 88, 69, 62, 73, 51, 81, 83, 80, 70, 128, 42 ]
[ "nonn", "easy", "tabl" ]
A333853
[ 2, 3, 2, 2, 3, 2, 2, 3, 4, 4, 4, 4, 3, 3, 2, 2, 2, 3, 4, 3, 2, 2, 9, 6, 3, 2, 4, 5, 2, 3, 3, 2, 2, 6, 2, 4, 2, 3, 2, 4, 2, 8, 2, 3, 6, 4, 4, 3, 3, 2, 4, 10, 3, 2, 5, 8, 16, 3, 4, 4, 6, 5, 3, 3, 4, 3, 2, 2, 2, 2 ]
[ "nonn" ]
A340623
[ 0, 0, 1, 0, 2, 1, 3, 3, 5, 7, 8, 13, 14, 23, 23, 37, 39, 59, 63, 90, 101, 136, 156, 201, 239, 296, 355, 428, 523, 617, 754, 878, 1078, 1243, 1517, 1741, 2121, 2426, 2928, 3348, 4021, 4596, 5468, 6257, 7400, 8472, 9936, 11389, 13285, 15233, 17645, 20244, 23346 ]
[ "nonn" ]
A091903
[ 0, 1, 5, 75, 625, 6875, 65625, 671875, 6640625, 66796875, 666015625, 6669921875, 66650390625, 666748046875, 6666259765625, 66668701171875, 666656494140625, 6666717529296875, 66666412353515624, 666667938232421900 ]
[ "easy", "nonn" ]
A051311
[ 17, 2, 5, 3, 7, 3571, 31, 395202571, 13, 29, 137, 23, 97, 1896893, 3.413845346689515e+31, 4639, 61, 181, 43, 19, 11, 59, 25292522503108043000, 4909, 18305191, 467 ]
[ "nonn" ]
A032119
[ 1, 1, 6, 57, 750, 12645, 260190, 6322365, 177181830, 5625873225, 199608636150, 7826601269025, 336070622037150, 15684327120386924, 790493799998652800, 42790196611446410000, 2.475921578709979e+21, 1.524993240589398e+23, 9.96188726945731e+24, 6.879223762688034e+26 ]
[ "nonn", "eigen" ]
A211096
[ 1, 2, 1, 2, 1, 12, 1, 2, 1, 112, 1, 122, 1, 12, 1, 2, 1, 1112, 1, 1122, 1, 12, 1, 1222, 1, 112, 1, 122, 1, 12, 1, 2, 1, 11112, 1, 11122, 1, 11212, 1, 11222, 1, 112, 1, 12122, 1, 12, 1, 12222, 1, 1112, 1, 1122, 1, 12, 1, 1222, 1, 112, 1, 122, 1, 12, 1, 2, 1, 111112, 1, 111122, 1, 111212, 1, 111222, 1, 112, 1, 112122, 1, 112212, 1, 112222, 1, 1112, 1, 1122, 1 ]
[ "nonn" ]
A367632
[ 20, 28, 40, 42, 44, 52, 56, 60, 66, 68, 72, 76, 78, 80, 84, 88, 92, 99, 100, 102, 104, 110, 112, 114, 116, 117, 120, 124, 126, 130, 132, 136, 138, 140, 144, 148, 152, 153, 156, 160, 164, 168, 170, 171, 172, 174, 176, 180, 184, 186, 188, 190, 196, 198, 200, 204 ]
[ "nonn" ]
A050510
[ 0, 6, 30, 120, 240, 520, 960, 1386, 2184, 3240, 4160, 5742, 7068, 9282, 11914, 14040, 17472, 21420, 24534, 29450, 33280, 39270, 45936, 51060, 58968, 65000, 74256, 84348, 91980, 103588, 116130, 125550, 139776, 150414, 166430, 183540, 196272 ]
[ "easy", "nice", "nonn" ]
A278247
[ 1, 2, 2, 2, 2, 2, 6, 2, 2, 2, 2, 6, 2, 6, 2, 2, 6, 6, 2, 2, 2, 6, 6, 2, 6, 2, 6, 2, 6, 2, 2, 6, 6, 6, 2, 8, 6, 2, 2, 6, 2, 12, 6, 2, 2, 2, 30, 2, 6, 2, 6, 30, 2, 2, 2, 2, 6, 6, 2, 2, 6, 30, 6, 2, 2, 2, 6, 2, 6, 2, 6, 6, 6, 6, 6, 2, 6, 6, 6, 30, 6, 6, 2, 12, 2, 2, 6, 6, 2, 6, 6, 30, 2, 2, 6, 2, 6, 6, 6, 2, 2, 30, 2, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 6, 30, 6, 6 ]
[ "nonn" ]
A045110
[ 3, 11, 12, 14, 35, 43, 44, 46, 48, 50, 56, 58, 131, 139, 140, 142, 163, 171, 172, 174, 176, 178, 184, 186, 192, 194, 200, 202, 224, 226, 232, 234, 515, 523, 524, 526, 547, 555, 556, 558, 560, 562, 568, 570, 643, 651, 652, 654, 675 ]
[ "nonn", "base" ]
A139049
[ 8, 9, 11, 13, 17, 19, 23, 25, 29, 35, 37, 43, 47, 49, 53, 59, 65, 67, 73, 77, 79, 85, 89, 95, 103, 107, 109, 113, 115, 119, 133, 137, 143, 145, 155, 157, 163, 169, 173, 179, 185, 187, 197, 199, 203, 205, 217, 229, 233, 235, 239, 245, 247, 257, 263, 269, 275, 277 ]
[ "easy", "nonn" ]
A370035
[ 1, 5, 24, 111, 506, 2379, 12083, 67531, 406284, 2531203, 15866775, 98883303, 612775096, 3798083196, 23698615411, 149450139421, 953022469813, 6132672546362, 39706366904663, 258032916789711, 1680779512045521, 10970344718827784, 71764325720800070, 470691291168007700 ]
[ "nonn" ]
A282748
[ 1, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 4, 3, 4, 1, 1, 2, 9, 4, 5, 1, 1, 6, 3, 16, 5, 6, 1, 1, 4, 15, 4, 25, 6, 7, 1, 1, 6, 9, 28, 5, 36, 7, 8, 1, 1, 4, 21, 16, 45, 6, 49, 8, 9, 1, 1, 10, 9, 52, 25, 66, 7, 64, 9, 10, 1, 1, 4, 39, 16, 105, 36, 91, 8, 81, 10, 11, 1, 1, 12, 9, 100, 25, 186, 49, 120, 9, 100, 11, 12, 1, 1, 6, 45, 16, 205, 36, 301, 64, 153, 10, 121, 12, 13, 1 ]
[ "nonn", "tabl" ]
A101502
[ 1, 0, 4, 0, 48, 32, 640, 896, 8960, 18432, 130048, 337920, 1941504, 5857280, 29605888, 98435072, 458424320, 1624375296, 7174881280, 26507476992, 113123524608, 429538672640, 1792440008704, 6929367695360, 28495396732928 ]
[ "easy", "nonn" ]
A134991
[ 1, 1, 3, 1, 10, 15, 1, 25, 105, 105, 1, 56, 490, 1260, 945, 1, 119, 1918, 9450, 17325, 10395, 1, 246, 6825, 56980, 190575, 270270, 135135, 1, 501, 22935, 302995, 1636635, 4099095, 4729725, 2027025, 1, 1012, 74316, 1487200, 12122110, 47507460, 94594500, 91891800, 34459425 ]
[ "nonn", "tabl" ]
A096896
[ 5, 17, 13, 65, 29, 25, 53, 257, 85, 41, 125, 73, 173, 65, 61, 1025, 293, 97, 365, 89, 85, 137, 533, 265, 629, 185, 733, 113, 845, 169, 965, 4097, 157, 305, 149, 145, 1373, 377, 205, 281, 1685, 193, 1853, 185, 181, 545, 2213, 1033, 2405, 641, 325, 233, 2813, 745 ]
[ "nonn" ]
A221498
[ 37, 6466, 874106, 107190767, 12890161742, 1542965772979, 184428463987187, 22035191562675160, 2632400308104659000, 314464207472644060000, 3.7565215570028067e+22, 4.4874456666867355e+24 ]
[ "nonn" ]
A059517
[ 0, 0, 12, 138, 1056, 7050, 44472, 273378, 1659936, 10018650, 60289032, 362265618, 2175188016, 13055911050, 78349815192, 470141937858, 2820980767296, 16926272024250, 101558794406952, 609356253226098, 3656147979709776, 21936919259318250, 131621609699088320 ]
[ "nonn", "easy" ]
A293106
[ 0, 2088, 202363, 25504769, 2804027631, 331401441383, 38469698642410, 4639160801369811, 553541878970691300, 67495383900522580000, 8.184590699346266e+21, 1.0052004028793958e+24 ]
[ "nonn" ]
A107832
[ 12, 2, 6, 5, 7, 4, 15, 13, 8, 10, 1, 9, 11, 14, 16, 3, 17, 22, 19, 18, 20, 21, 23, 24, 25, 28, 26, 27, 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, 58, 59, 60, 61 ]
[ "easy", "nonn" ]
A127120
[ 1, 3, 12, 41, 140, 457, 1485, 4732, 14986, 47025, 146784, 455683, 1409122, 4341456, 13336440, 40858875, 124894889, 380993722, 1160145321, 3527008680, 10707133507, 32461710583, 98300107420, 297348593017, 898559807247, 2712889137261, 8183743165156, 24668014337837 ]
[ "nonn" ]
A156118
[ 155921, 268343, 413353, 1004873, 1140091, 1272749, 1280023, 1357201, 1422367, 1444309, 1451423, 1468079, 1491377, 1553653, 1561919, 1653853, 1655707, 1733449, 1904311, 2045213, 2046553, 2052217, 2116291, 2166319, 2244091 ]
[ "nonn", "base" ]
A360405
[ 2, 6, 15, 27, 34, 45, 55, 60, 69, 81, 91, 96, 108, 114, 124, 135, 142, 153, 163, 168, 180, 186, 195, 208, 217, 222, 231, 244, 249, 262, 271, 276, 285, 297, 307, 312, 324, 330, 339, 352, 361, 366, 375, 387, 394, 405, 414, 421, 432, 438, 447, 459, 466, 477 ]
[ "nonn", "easy", "changed" ]
A369495
[ 1, 1, 1, 2, 3, 5, 11, 25, 56, 129, 313, 748, 1831, 4584, 11581, 29555, 76398, 199191, 522746, 1382158, 3676072, 9828631, 26412174, 71310248, 193346941, 526302232, 1437895915, 3941671019, 10839118898, 29893768219, 82671240995, 229213877639, 637049969282 ]
[ "nonn" ]
A261017
[ 1, 3, 4, 5, 5, 7, 8, 9, 9, 9, 11, 11, 13, 15, 16, 17, 17, 17, 17, 19, 19, 19, 21, 21, 23, 23, 23, 27, 29, 31, 32, 33, 33, 33, 33, 33, 35, 35, 35, 35, 37, 37, 37, 39, 39, 39, 39, 41, 41, 43, 43, 45, 45, 45, 47, 47, 47, 47 ]
[ "nonn", "more" ]
A136186
[ 3, 5, 7, 11, 13, 17, 31, 37, 71, 73, 97, 101, 107, 113, 131, 151, 167, 181, 199, 313, 337, 353, 359, 373, 383, 701, 709, 727, 739, 757, 797, 907, 937, 941, 953, 967, 1033, 1091, 1109, 1153, 1181, 1193, 1201, 1217, 1229, 1259, 1439, 1453, 1471, 1487, 1619, 1669 ]
[ "base", "nonn" ]
A073238
[ 1, 4, 3, 9, 6, 1, 9, 4, 9, 5, 8, 4, 7, 5, 9, 0, 6, 8, 8, 3, 3, 6, 4, 9, 0, 8, 0, 4, 9, 7, 3, 7, 5, 5, 6, 7, 8, 6, 9, 8, 2, 9, 6, 4, 7, 4, 4, 5, 6, 6, 4, 0, 9, 8, 2, 2, 3, 3, 1, 6, 0, 6, 4, 1, 8, 9, 0, 2, 4, 3, 4, 3, 9, 4, 8, 9, 1, 7, 5, 8, 4, 7, 8, 1, 9, 7, 7, 5, 0, 4, 6, 5, 9, 8, 4, 1, 3, 0, 4, 2, 0, 3, 4, 4, 2 ]
[ "cons", "nonn" ]
A311623
[ 1, 4, 8, 12, 18, 24, 24, 34, 38, 38, 48, 54, 56, 54, 70, 68, 68, 84, 88, 86, 86, 104, 98, 100, 118, 122, 118, 116, 138, 130, 130, 152, 158, 148, 146, 174, 160, 160, 188, 192, 178, 178, 208, 190, 192, 222, 226, 210, 208, 242 ]
[ "nonn" ]
A264266
[ 10, 48, 305, 1800, 10933, 65856, 397970, 2402455, 14508869, 87609600, 529045373, 3194668217, 19291314050, 116492151552, 703447966957, 4247829912600, 25650883291001, 154895038005840, 935346867163930, 5648171599648271 ]
[ "nonn" ]
A086353
[ 1, 2, 6, 8, 2, 4, 2, 8, 8, 8, 6, 1, 2, 8, 8, 8, 8, 6, 8, 8, 8, 8, 8, 2, 2, 8, 4, 8, 6, 2, 2, 6, 1, 8, 8, 8, 2, 2, 6, 8, 8, 8, 8, 8, 8, 6, 8, 6, 8, 8, 8, 6, 6, 1, 8, 8, 5, 8, 6, 6, 8, 6, 8, 2, 8, 8, 8, 6, 8, 2, 8, 8, 2, 6, 6, 8, 9, 6, 8, 8, 6, 2, 2, 8, 8, 8, 8, 4, 6, 8, 9, 6, 2, 2, 8, 2, 8, 8, 4, 4, 8, 8, 6, 2, 8 ]
[ "base", "nonn" ]
A252090
[ 3, 13, 19, 31, 43, 61, 73, 79, 103, 109, 139, 151, 163, 199, 211, 223, 229, 241, 283, 331, 373, 421, 433, 439, 463, 541, 571, 613, 619, 631, 673, 691, 733, 769, 811, 829, 853, 859, 883, 919, 991, 1021, 1033, 1063, 1069, 1123, 1153, 1201, 1231, 1249 ]
[ "nonn", "easy" ]
A251140
[ 0, 1, 1, 2, 2, 3, 2, 2, 1, 2, 2, 3, 2, 4, 1, 2, 2, 3, 3, 2, 2, 1, 1, 2, 2, 3, 3, 2, 5, 1, 3, 2, 4, 2, 2, 2, 4, 2, 3, 2, 2, 3, 1, 3, 2, 3, 2, 4, 2, 3, 1, 5, 2, 3, 3, 2, 4, 4, 2, 2, 1, 1, 2, 2, 6, 3, 3, 2, 4, 2, 4, 2, 3, 2, 5, 3, 2, 3, 1, 3, 2, 3, 3, 5, 2, 2 ]
[ "nonn" ]
A138470
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 3, 6, 9, 12, 15, 18, 21, 24, 27, 29, 6, 10, 14, 18, 22, 26, 30, 34, 37, 39, 10, 15, 20, 25, 30, 35, 40, 44, 47, 49, 15, 21, 27, 33, 39, 45, 50, 54, 57, 59, 21, 28, 35, 42, 49, 55, 60, 64, 67, 69, 28, 36, 44, 52, 59, 65 ]
[ "nonn", "base", "look" ]
A196453
[ 8, 67, 383, 2930, 27320, 249402, 2032584, 15952022, 128543371, 1060801262, 8803139813, 72685286254, 596527548372, 4887671652328, 40110935638661, 329698087638675, 2710883854573401, 22279902843871852, 183037488877957630 ]
[ "nonn" ]
A192230
[ 0, 1, 3, 5, 9, 19, 27, 32, 78, 106, 108, 156, 367, 509, 542, 1155, 1158, 1172, 1262, 1268, 1428, 1738, 2497, 2868, 3989, 6018, 6452, 8010, 8178, 10537, 10870, 11434, 13915, 15370, 20685, 20852, 22854, 29415, 32406, 35779, 40456, 43938, 48568, 84406 ]
[ "nonn" ]
A384745
[ 1, 762939453126, 108446592504415, 237117407802652, 117233362822797, 181464088068226, 50336702857227, 255306056401528, 30528867956313, 110940877951102, 23915768730871, 190863546762260, 232890898414437, 164321838504634, 236717685210403, 41303196833264 ]
[ "nonn", "easy" ]
A094708
[ 0, 0, 1, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 7, 8, 8, 9, 9, 9, 9, 10, 10, 11, 11, 11, 11, 12, 12, 13, 13, 13, 13, 13, 14, 14, 15, 15, 15, 16, 16, 16, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 21 ]
[ "nonn" ]
A083610
[ 1698, 4928, 6917, 7651, 8413, 8736, 8828, 12520, 17614, 21973, 22580, 22704, 22749, 23471, 25094, 25179, 28467, 28468, 28469, 30583, 32631, 33095, 35838, 37507, 38597, 41392, 42438, 42734, 45756, 48033, 48207, 48369, 49287, 50547, 52794 ]
[ "base", "nonn" ]
A072316
[ 987, 377, 86267571272, 7778742049, 1.0284720757613718e+22, 7.817740794309872e+23, 1.7253750390793406e+27, 1.7978720198565577e+46 ]
[ "base", "nonn" ]
A253939
[ 7309, 45361, 67103, 97777, 128521, 149381, 374669, 543313, 656459, 872747, 940913, 1110817, 1219877, 1288603, 1324567, 1599319, 1629809, 2006677, 2129527, 2495501, 2544121, 2735839, 2763053, 2786363, 2856167, 3145661, 3428839, 3585149, 4063877, 4115971 ]
[ "nonn" ]
A036059
[ 1, 1, 21, 1221, 3231, 233231, 533221, 15534221, 3514334231, 3534533241, 3544832231, 183544733221, 28172544634231, 2827162554535241, 2827265554337241, 2837267544338231, 3847264544637221, 3847362564636221, 2837662564536221, 2827863534537221, 3837564524538221 ]
[ "nonn", "base", "nice", "easy" ]
A225271
[ 2, 6, 10, 10, 13, 22, 22, 22, 22, 22, 37, 37, 37, 37, 37, 37, 37, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 58, 163, 163, 163, 163, 163, 163, 163, 163, 163, 163, 163, 1042, 1042, 1657, 1657, 1657, 1657, 1858, 1982, 1982, 1982, 2293, 2293, 2293, 2293, 2293, 2293, 3073 ]
[ "nonn" ]
A190524
[ 24, 51, 79, 106, 135, 162, 190, 217, 246, 273, 301, 328, 357, 383, 411, 438, 467, 494, 521, 549, 575, 604, 631, 659, 685, 714, 741, 768, 795, 824, 851, 879, 906, 935, 962, 989, 1017, 1044, 1073, 1100, 1127, 1153, 1182, 1209, 1237, 1264, 1293, 1320, 1348, 1374, 1403, 1430, 1458, 1485, 1511, 1540, 1567, 1595, 1622, 1651 ]
[ "nonn" ]
A291202
[ 2, 3, 8, 11, 17, 41, 57, 62, 77, 101, 329, 333, 359, 365, 968, 1169, 1190, 1772, 2237, 12075, 30848, 63200, 190547 ]
[ "nonn", "more", "hard" ]