id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A262555
[ 3, 41, 103, 1713, 2769 ]
[ "nonn", "base", "more" ]
A000674
[ 1, 3, 7, 16, 43, 138, 527, 2346, 11943, 68418, 435547, 3050026, 23300443, 192835698, 1718682167, 16412205306, 167173350543, 1809239622978, 20732358910387, 250773962554186, 3192953259262243, 42686640718266260, 597853508941160200 ]
[ "nonn", "changed" ]
A276371
[ 1, 1, 3, 19, 177, 2161, 32643, 587539, 12273537, 291853441, 7782998883, 230028553459, 7462717994097, 263654454838321, 10075889406229924, 414147167601017800, 18217983822073897000, 853975145498805300000, 4.249510745220887e+22, 2.2372644059840045e+24, 1.2424324244836734e+26, 7...
[ "nonn", "easy" ]
A339085
[ 0, 2, 3, 2, 3, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 4, 4, 4, 4, 4, 5, 5, 5, 4, 4, 4, 4, 4, 5, 6, 6, 5, 5, 6, 6, 6, 6, 6, 7, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 7, 8, 8, 8, 8...
[ "nonn" ]
A154615
[ 0, 1, 16, 9, 64, 25, 144, 49, 256, 81, 400, 121, 576, 169, 784, 225, 1024, 289, 1296, 361, 1600, 441, 1936, 529, 2304, 625, 2704, 729, 3136, 841, 3600, 961, 4096, 1089, 4624, 1225, 5184, 1369, 5776, 1521, 6400, 1681, 7056, 1849, ...
[ "nonn", "easy", "mult" ]
A225814
[ 44770, 825550, 27354103, 123572293, 140307550, 148925950, 213663175, 375064963, 1002265990, 1579248097, 2953883023, 3985833850, 4716952513, 4871428198, 4929024175, 9067177798 ]
[ "nonn" ]
A225709
[ 15, 21, 33, 35, 39, 55, 77, 91, 119, 143, 195, 231, 255, 299, 455, 551, 651, 663, 715, 935, 1131, 1155, 1419, 2015, 2035, 2431, 3003, 3111, 3927, 4611, 5451, 7215, 7735, 8151, 8671, 9191, 10455, 11571, 15015, 15477, 16511, 18343, 18...
[ "nonn" ]
A242230
[ 61, 4561, 9511, 17299, 19471, 26737, 30109, 37447, 49957, 69439, 94561, 196699, 209311, 259603, 317539, 333517, 352249, 414097, 427069, 459013, 678157, 845491, 886429, 943819, 1027189, 1217719, 1410163, 1472587, 1647379, 2165323, 2200777, 2230549, 2603...
[ "nonn" ]
A042548
[ 28, 57, 85, 2352, 2437, 7226, 407093, 821412, 1228505, 33991047, 35219552, 104430151, 5883308008, 11871046167, 17754354175, 491238608892, 508992963067, 1509224535026, 85025566924523, 171560358384072, 256585925308595, 7099380341716137, 7355966267024732 ]
[ "nonn", "frac", "easy" ]
A266691
[ 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 3, 2, 5, 4, 10, 9, 17, 20, 25, 31, 47, 53, 71, 89, 109, 138, 171, 205, 257, 317, 375, 461, 557, 664, 792, 962, 1124, 1352, 1596, 1878, 2215, 2621, 3042, 3584, 4180, 4862, 5658, 6593, 7598, ...
[ "nonn" ]
A289081
[ 1, 2, 3, 4, 5, 8, 42, 52, 81, 96, 98, 152, 190, 261, 686, 1930, 2152, 5694, 6341, 14067, 18124, 31678, 58521, 73647, 128244 ]
[ "nonn", "more", "hard" ]
A233012
[ 1, 11, 1202, 750092, 2555361596, 47506658438246, 4819736584585663000, 2.6684501080033547e+24, 8.062352020337952e+30, 1.3293251931846859e+38 ]
[ "nonn" ]
A015565
[ 0, 1, 7, 57, 455, 3641, 29127, 233017, 1864135, 14913081, 119304647, 954437177, 7635497415, 61083979321, 488671834567, 3909374676537, 31274997412295, 250199979298361, 2001599834386887, 16012798675095096, 128102389400760770, 1024819115206086100, 8198552921648689000 ]
[ "nonn", "easy" ]
A071873
[ 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 0, 5, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 1, 6, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 3, 8, 3, 8, 3...
[ "cons", "easy", "nonn", "base" ]
A274555
[ 17, 40, 52, 72, 73, 80, 89, 97, 116, 136, 145, 148, 180, 193, 232, 233, 241, 244, 260, 288, 292, 305, 313, 337, 360, 369, 388, 404, 409, 424, 449, 457, 481, 520, 521, 544, 548, 577, 584, 585, 592, 612, 628, 640, 656, 673, 69...
[ "nonn", "easy" ]
A300413
[ 1, 0, 2, 2, 2, 6, 4, 10, 10, 14, 20, 22, 32, 38, 48, 60, 74, 90, 112, 134, 164, 196, 236, 282, 336, 398, 472, 554, 652, 766, 890, 1046, 1206, 1408, 1624, 1876, 2168, 2486, 2860, 3276, 3744, 4282, 4878, 5554, 6316, 7160, 8124...
[ "nonn" ]
A165807
[ 1, 12, 132, 1452, 15972, 175692, 1932612, 21258732, 233846052, 2572306572, 28295372226, 311249093760, 3423740023440, 37661140170720, 414272540919600, 4556997939574080, 50126977219358160, 551396748137415800 ]
[ "nonn" ]
A262243
[ 1, 2, 4, 8, 6, 22, 44, 88, 7, 8, 191, 8, 9, 99, 9, 7, 5, 9, 8, 6, 5, 7, 55, 9, 8, 626, 252, 5, 9, 151, 66, 7, 7, 9, 8, 66, 8, 8, 848, 696, 33, 5, 343, 3773, 7, 55, 8, 616, 232, 464, 9, 9, 9, 55, 9, 9, 9, ...
[ "nonn", "base" ]
A040791
[ 28, 1, 1, 1, 2, 1, 10, 1, 2, 1, 1, 1, 56, 1, 1, 1, 2, 1, 10, 1, 2, 1, 1, 1, 56, 1, 1, 1, 2, 1, 10, 1, 2, 1, 1, 1, 56, 1, 1, 1, 2, 1, 10, 1, 2, 1, 1, 1, 56, 1, 1, 1, 2, 1, 10, 1, 2, 1, 1, 1, 56, ...
[ "nonn", "cofr", "easy" ]
A184928
[ 1, 5, 8, 11, 14, 18, 21, 23, 27, 30, 33, 37, 40, 43, 45, 49, 52, 55, 59, 62, 65, 68, 71, 74, 77, 81, 84, 87, 91, 93, 96, 99, 103, 106, 109, 113, 116, 118, 121, 125, 128, 131, 135, 138, 140, 144, 147, 150, 153, 157, 1...
[ "nonn" ]
A154659
[ 1, 1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800, 39916800, 402796800, 3770686080, 33187593600, 278598101040, 2261952938160, 17986137205800, 141564484858104, 1112444773251726, 8787513806478134, 70146437009397870, 568128719132038140, 4647312969412825000 ]
[ "nonn" ]
A090108
[ 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, 5...
[ "nonn" ]
A168805
[ 1, 32, 992, 30752, 953312, 29552672, 916132832, 28400117792, 880403651552, 27292513198112, 846067909141472, 26228105183385630, 813071260684954600, 25205209081233592000, 781361481518241400000, 2.4222205927065483e+22 ]
[ "nonn" ]
A009953
[ 1, 16, 52, 104, 214, 352, 476, 700, 922, 1148, 1432, 1726, 2048, 2464, 2872, 3254, 3712, 4312, 4784, 5290, 5896, 6512, 7150, 7816, 8516, 9292, 10054, 10820, 11596, 12544, 13478, 14236, 15340, 16334, 17248, 18232, 19328, 20374, 21664, 2274...
[ "nonn" ]
A144675
[ 1, 2, 6, 8, 10, 242, 5732, 12230 ]
[ "nonn", "more", "hard" ]
A339153
[ 1, 1, 1, 2, 3, 6, 10, 20, 37, 74, 144, 295, 594, 1229, 2540, 5324, 11177, 23684, 50326, 107593, 230743, 497008, 1073667, 2327213, 5057433, 11020414, 24068945, 52685541, 115555511, 253933732, 558993308, 1232569467, 2721958234, 6019784562, 1333119201...
[ "nonn" ]
A224389
[ 84, 7056, 319769, 9331553, 211856287, 4364554008, 90682660877, 1970202629627, 44404431681110, 1020688669518185, 23669944875525396, 551060981056174340, 12857376512847673000, 300489121615902700000, 7.032615140846783e+21 ]
[ "nonn" ]
A364092
[ 1, 1, 1, 1, 7, 1, 1, 1, 12, 1, 7, 1, 17, 1, 1, 1, 28, 1, 1, 12, 27, 1, 7, 1, 32, 1, 1, 1, 59, 1, 12, 1, 42, 1, 7, 1, 47, 22, 1, 1, 58, 12, 1, 1, 73, 1, 33, 1, 62, 1, 1, 1, 84, 1, 1, 32, 72, 1, 28, 1...
[ "nonn" ]
A202837
[ 1, 3, 13, 63, 345, 2043, 13029, 88119, 629169, 4707315, 36772029, 298608687, 2513795337, 21874602987, 196341166485, 1814001266727, 17222473789281, 167763502438371, 1674418724986221, 17102228350521376, 178562508150516930, 1903865792493260800 ]
[ "nonn" ]
A044783
[ 70, 170, 270, 370, 470, 570, 670, 709, 770, 870, 970, 1070, 1170, 1270, 1370, 1470, 1570, 1670, 1709, 1770, 1870, 1970, 2070, 2170, 2270, 2370, 2470, 2570, 2670, 2709, 2770, 2870, 2970, 3070, 3170, 3270, 3370, 3470, 3570 ]
[ "nonn", "base" ]
A319390
[ 1, 2, 3, 6, 8, 13, 16, 23, 27, 36, 41, 52, 58, 71, 78, 93, 101, 118, 127, 146, 156, 177, 188, 211, 223, 248, 261, 288, 302, 331, 346, 377, 393, 426, 443, 478, 496, 533, 552, 591, 611, 652, 673, 716, 738, 783, 806, 853, 8...
[ "nonn", "easy" ]
A020419
[ 1759, 1981, 2206, 2764, 2989, 3559, 3628, 3694, 3817, 3868, 3921, 4041, 4333, 5006, 5293, 5294, 5407, 5647, 5877, 6193, 6281, 6718, 6847, 6892, 7660, 8039, 8137, 8359, 8561, 8596, 9487, 9788, 9989, 10014, 10495, 10579, 10697, 10737, 10882, ...
[ "nonn" ]
A111101
[ 1, 2, 3, 7, 8, 12, 13, 3138, 3142, 3146, 3147, 6272, 6273, 6277, 6278, 11112006825564294, 11112006825564296, 11112006825567420, 11112006825567420, 11112006825570546, 11112006825570550, 11112006825570554, 11112006825570556, 449005897206429950, 449005897206429950 ]
[ "easy", "nonn", "less" ]
A221444
[ 31, 1577, 76055, 3669101, 177320895, 8569227073, 414116287743, 20012580804813, 967127817426727, 46737411242830050, 2258631763028702200, 109150620595639470000, 5.274812021536487e+21, 2.5491052374187514e+23 ]
[ "nonn" ]
A364415
[ 0, 1, 6, 22, 65, 185, 512, 1402, 3825, 10412, 28318, 76995, 209314, 568995, 1546713, 4204428, 11428848, 31066858, 84448506, 229554871, 623994868, 1696193945, 4610733216, 12533272358, 34068966559 ]
[ "nonn", "more" ]
A354223
[ 1, 2, 3, 1, 3, 4, 2, 1, 2, 4, 1, 4, 5, 3, 2, 1, 2, 3, 1, 3, 5, 2, 1, 2, 5, 1, 5, 6, 4, 3, 2, 1, 2, 3, 1, 3, 4, 2, 1, 2, 4, 1, 4, 6, 3, 2, 1, 2, 3, 1, 3, 6, 2, 1, 2, 6, 1, 6, 7, 5, 4, 3, 2, 1...
[ "nonn" ]
A221751
[ 1, 9, 43, 241, 1397, 7989, 45956, 264378, 1520571, 8746983, 50315631, 289432219, 1664916443, 9577180972, 55091295173, 316904423483, 1822945187570 ]
[ "nonn" ]
A018106
[ 1, 2, 5, 10, 21, 45, 96, 206, 441, 944, 2021, 4326, 9261, 19825, 42439, 90849, 194481, 416325, 891224, 1907839, 4084101, 8742815, 18715702, 40064612, 85766121, 183599119, 393029742, 841356859, 1801088541 ]
[ "nonn" ]
A230389
[ 0, 0, 1, 5, 3, 119, 719, 260, 180, 495, 3628799, 39916799, 6561647, 9899, 722799, 15308432, 735092, 779904000, 1193692724, 77841862127, 1947879910469375, 7981643124, 231453720692, 37427202522827, 1793894810624, 251579908188224, 286527829489835780, 33866880878997...
[ "nonn" ]
A340946
[ 1, 0, 0, 9, 0, 0, 36, 0, 9, 84, 0, 72, 126, 0, 252, 135, 36, 504, 156, 252, 630, 288, 756, 576, 606, 1260, 756, 1207, 1260, 1584, 2052, 1008, 2727, 2688, 1764, 3663, 2718, 3816, 4608, 2853, 5418, 6048, 4620, 5868, 7506, 7464, ...
[ "nonn" ]
A277292
[ 1, 1, 4, 21, 122, 758, 4958, 33509, 233810, 1641150, 12364368, 71807506, 1354944972, -33794258600, 2524565441138, -186642439700891, 16196862324254354, -1602823227559245300, 179707702260054030000, -2.265697755763476e+22, 3.191199098536327e+24, -4.9920696057210876e+26, 8.62...
[ "sign" ]
A004689
[ 0, 1, 1, 2, 3, 5, 12, 21, 33, 54, 131, 225, 400, 1025, 1425, 2454, 4323, 11221, 15544, 31205, 51153, 122402, 213555, 340401, 554400, 1335201, 2334001, 4113202, 10451203, 15004405, 25500012, 44504421, 114404433 ]
[ "nonn", "base", "easy" ]
A273660
[ 115975, 6188545, 188526162, 4324211606, 83234980829, 1422697691415, 22336690031656, 329296289467288, 4628083121855622, 62687799439000450, 824939949711312300, 10611095747493198000, 134039591449028950000, 1.668916223557034e+21, 2.0541239452587944e+22 ]
[ "nonn" ]
A147390
[ 1, 1, 1, 1, 1, 1, 1, 5, 10, 19, 36, 65, 146, 407, 1091, 3253, 10430, 34729, 123767, 502614, 2115588, 9918395, 49148200, 263504620 ]
[ "nonn" ]
A100780
[ 235723, 235747, 235751, 235783, 235787, 235789, 235793, 2357009, 2357027, 2357029, 2357039, 2357057, 2357059, 2357071, 2357077, 2357099, 2357119, 2357153, 2357167, 2357183, 2357189, 2357219, 2357231, 2357249, 2357263 ]
[ "nonn", "base", "easy" ]
A097050
[ 2, 2, 5, 7, 11, 17, 23, 29, 37, 47, 59, 67, 79, 97, 107, 127, 137, 157, 173, 191, 211, 233, 257, 277, 307, 331, 353, 379, 409, 439, 467, 499, 541, 563, 599, 631, 673, 709, 743, 787, 821, 863, 907, 947, 991, 1039, 1087, 112...
[ "nonn" ]
A061590
[ 10, 11, 22, 44, 88, 1616, 7777, 14141414, 55555555, 1010101010101010, 1111111111111111, 2222222222222222, 4444444444444444, 8888888888888888, 1.6161616161616161e+31, 7.777777777777778e+31 ]
[ "nonn", "easy", "base" ]
A089620
[ 3, 11, 32, 71, 136, 229, 360, 531, 752, 1029, 1362, 1765, 2238, 2787, 3422, 4149, 4972, 5893, 6926, 8071, 9334, 10727, 12250, 13913, 15722, 17677, 19786, 22059, 24498, 27113, 29918, 32899, 36074, 39443, 43024, 46807, 50810, 55035, 59486, ...
[ "easy", "nonn" ]
A092702
[ 1, 1, 1, 8, 1, 12, 4, 33, 3, 19, 22, 71, 58, 10, 230, 1487, 2887, 555, 1260, 1711, 377, 343 ]
[ "nonn" ]
A199646
[ 11, 6628, 1396083, 342328663, 80053957248, 19161971644783, 4539946639286136, 1079929763429898000, 256503858825070970000 ]
[ "nonn" ]
A209628
[ 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 5, 5, 5, 5, 5, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 11, 12, 12, 12, 13, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 19, 20, ...
[ "nonn" ]
A071655
[ 0, 1, 3, 2, 7, 8, 5, 4, 6, 17, 18, 20, 21, 22, 12, 13, 10, 9, 11, 15, 14, 19, 16, 45, 46, 48, 49, 50, 54, 55, 57, 58, 59, 61, 62, 63, 64, 31, 32, 34, 35, 36, 26, 27, 24, 23, 25, 29, 28, 33, 30, 40, 41, 38, 37...
[ "nonn" ]
A234879
[ 512, 1188, 2096, 6364, 12208, 44348, 87312, 354132, 703104, 3038716, 6051952, 27075444, 53993296, 245985516, 490821440, 2257240564, 4505154032, 20819580220, 41558674736, 192537441668, 384356619712, 1783019060604, 3559512651120 ]
[ "nonn" ]
A220530
[ 2, 27, 274, 2660, 23948, 204634, 1697940, 13869434, 112203992, 902932630, 7245817986, 58059100355 ]
[ "nonn" ]
A133191
[ 1123465789, 203457869, 103456789, 1012458679, 102356789, 102346789, 1012345987, 102345689, 102345697, 1012356487 ]
[ "fini", "full", "nonn", "base" ]
A383203
[ 0, 1, 4, 19, 104, 641, 4380, 32803, 266768, 2337505, 21925236, 218946003, 2316939256, 25878593313, 304020964876, 3745210267939, 48248600421664, 648460085178689, 9072650530778084, 131884007007981070, 1988341404357799200, 31040812899065995000, 501049583881525900000 ]
[ "nonn" ]
A356960
[ 1, 1, 10, 207, 6620, 288040, 15891234, 1063219640, 83665143176, 7572321823536, 775010639465040, 88510236140283680, 11158965455394333000, 1.539441941412714e+21, 2.3067563126676136e+23, 3.7309025609545825e+25, 6.478248637390495e+27 ]
[ "nonn" ]
A048888
[ 0, 1, 2, 4, 7, 13, 23, 42, 76, 139, 255, 471, 873, 1627, 3044, 5718, 10779, 20387, 38673, 73561, 140267, 268065, 513349, 984910, 1892874, 3643569, 7023561, 13557019, 26200181, 50691977, 98182665, 190353369, 369393465, 717457655 ]
[ "nonn" ]
A296211
[ 0, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0...
[ "nonn" ]
A228635
[ 9, 0, 0, 0, 0, 0, 0, 0, 0, 306, 684, 760, 840, 924, 1012, 1104, 1200, 1300, 19656, 62748, 138040, 228810, 336660, 463264, 610368, 779790, 973420, 2736720, 8346312, 20967678, 44830500, 83049720, 139206480, 217387002, 322222908, 458932980, 802030...
[ "nonn" ]
A208848
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 13, 0, 0, 26, 0, 0, 54, 0, 238, 794, 0, 0, 308, 545, 0 ]
[ "nonn", "more" ]
A220993
[ 1, 2, 1, 4, 10, 1, 7, 44, 35, 1, 12, 168, 324, 132, 1, 21, 642, 2899, 2456, 497, 1, 37, 2463, 23895, 48800, 18606, 1881, 1, 65, 9454, 193052, 826251, 781249, 141464, 7102, 1, 114, 36363, 1550909, 13696660, 26731299, 12552490, 107326...
[ "nonn", "tabl" ]
A124278
[ 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 3, 2, 2, 1, 1, 3, 4, 4, 3, 2, 1, 1, 2, 5, 5, 4, 3, 2, 1, 1, 4, 7, 8, 6, 5, 3, 2, 1, 1, 3, 8, 9, 9, 6, 5, 3, 2, 1, 1, 5, 11, 14, 12, 10, 7, 5, 3,...
[ "nice", "nonn", "tabl" ]
A328184
[ 4, 8, 20, 12, 28, 16, 12, 20, 44, 24, 52, 28, 20, 32, 68, 36, 76, 40, 28, 44, 92, 48, 100, 52, 36, 56, 116, 60, 124, 64, 44, 68, 140, 72, 148, 76, 52, 80, 164, 84, 172, 88, 60, 92, 188, 96, 196, 100, 68, 104, 212, ...
[ "nonn", "frac" ]
A338087
[ 2, 17, 73, 193, 1873, 20353, 20353, 79633, 2333017 ]
[ "fini", "full", "nonn" ]
A281719
[ 16, 9, 17, 245, 937, 6417, 37781, 214045, 1321909, 7709401, 45858679, 274481652, 1621718293, 9681714758, 57586120717, 342417879408, 2040527424639, 12140992057625, 72295270999213, 430542760825365, 2563358199717255 ]
[ "nonn" ]
A234763
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[ "nonn" ]
A265832
[ 1, 0, 0, 3, 0, 0, 9, 0, 8, 27, 0, 24, 81, 13, 72, 243, 103, 216, 747, 309, 648, 2345, 927, 1967, 7547, 2781, 6214, 22641, 8371, 19474, 67923, 25531, 62518, 203802, 79097, 187554, 612253, 243947, 562700, 1842300, 764609, 1689142, 554...
[ "nonn" ]
A201289
[ 9, 9, 5, 7, 0, 5, 8, 7, 3, 4, 8, 9, 9, 3, 4, 7, 8, 9, 4, 3, 3, 0, 6, 5, 8, 4, 3, 4, 4, 9, 3, 3, 8, 8, 1, 3, 6, 2, 4, 3, 3, 7, 6, 6, 3, 4, 3, 9, 3, 8, 8, 9, 4, 3, 0, 4, 4, 6, 9, 5, 2, 4, 0, 8...
[ "nonn", "cons" ]
A296938
[ 2, 13, 19, 43, 47, 53, 59, 67, 83, 89, 101, 103, 127, 137, 149, 151, 157, 179, 191, 223, 229, 239, 251, 257, 263, 271, 281, 293, 307, 331, 349, 353, 359, 373, 383, 389, 409, 421, 433, 443, 457, 461, 463, 467, 491, 509, 523, ...
[ "nonn", "easy" ]
A193871
[ 1, 1, 1, 1, 3, 1, 1, 7, 7, 1, 1, 15, 25, 13, 1, 1, 31, 79, 61, 21, 1, 1, 63, 241, 253, 121, 31, 1, 1, 127, 727, 1021, 621, 211, 43, 1, 1, 255, 2185, 4093, 3121, 1291, 337, 57, 1, 1, 511, 6559, 16381, 15621, 7771, 2...
[ "nonn", "tabl", "easy" ]
A271839
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15, 24, 40, 65, 101, 150, 214, 295, 395, 911, 1479, 2164, 3105, 4571, 7033, 11252, 18383, 30095, 48707, 141866, 372815, 81...
[ "nonn" ]
A083692
[ 1, 3, 10, 38, 148, 620, 2600, 11480, 50256, 229296, 1032352, 4816736, 22118720, 104890048, 488768128, 2346515840, 11058545920, 53605825280, 254908828160, 1245304583680, 5965139153920, 29328419056640, 141339991746560 ]
[ "nonn" ]
A175981
[ 1, 0, -1, -2, 15, 759374, 1.9174954416777433e+35 ]
[ "sign" ]
A026622
[ 1, 2, 5, 12, 26, 54, 110, 222, 446, 894, 1790, 3582, 7166, 14334, 28670, 57342, 114686, 229374, 458750, 917502, 1835006, 3670014, 7340030, 14680062, 29360126, 58720254, 117440510, 234881022, 469762046, 939524094, 1879048190, 3758096382, 7516192766 ]
[ "nonn", "easy" ]
A336738
[ 1399, 17939, 32869, 149759, 282349, 458929, 388099, 615389, 634169, 585619, 926179, 1053449, 1876339, 1336529, 2056829, 2156369, 2695249, 2653699, 2819779, 2501449, 1461709, 2176679, 3457969, 2549479, 3433819, 5299219, 4845499, 4774619, 7874749, 8796049, 9...
[ "nonn", "base", "look" ]
A229706
[ 1, 1, 1, 1, 2, 1, 1, 4, 2, 1, 1, 6, 5, 2, 1, 1, 9, 9, 5, 2, 1, 1, 12, 16, 10, 5, 2, 1, 1, 16, 25, 19, 10, 5, 2, 1, 1, 20, 39, 32, 20, 10, 5, 2, 1, 1, 25, 56, 54, 35, 20, 10, 5, 2, 1, 1, 30, 80, 84, ...
[ "nonn", "tabl" ]
A008485
[ 1, 1, 5, 22, 105, 506, 2492, 12405, 62337, 315445, 1605340, 8207563, 42124380, 216903064, 1119974875, 5796944357, 30068145905, 156250892610, 813310723925, 4239676354650, 22130265931900, 115654632452535, 605081974091875, 3168828466966388, 16610409114771900 ]
[ "nonn" ]
A102104
[ 1, 3, 34, 2125, 399551, 167436757, 133589812359, 182634217743739, 396471609861950600, 1.2901758053322974e+21, 6.016194958934722e+24, 3.8771533093655783e+28, 3.352191582268493e+32 ]
[ "nonn" ]
A215278
[ 2, 5, 23, 43, 59, 61, 97, 101, 137, 139, 157, 173, 211, 233, 251, 271, 347, 367, 401, 439, 443, 461, 479, 499, 557, 593, 613, 631, 709, 727, 743, 821, 823, 857, 859, 937, 971, 1009, 1013, 1031, 1049, 1051, 1069, 1087, 1123, 11...
[ "nonn", "easy" ]
A174965
[ 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 2, 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...
[ "nonn" ]
A204764
[ 404851, 576791, 818723, 843911, 1053863, 1138273, 1294849, 1467989, 1876859, 1964987, 1966697, 1985077, 2030789, 2214383, 2220553, 2423249, 2483291, 2527823, 2542237, 2638087, 2680141, 2856683, 2910329, 3106487, 3112147, 3112519, 3175169, 3279037, 3398761 ]
[ "nonn" ]
A222293
[ 37, 30, 34, 30, 31, 29, 28, 38, 42, 32, 40, 40, 49, 30, 40, 40, 54, 45, 46, 40, 49, 44, 41, 48, 47, 54, 48, 41, 50, 44, 54, 45, 49, 60, 53, 47, 54, 50, 56, 44, 48, 50, 54, 47, 54, 38, 56, 47, 60, 48, 63, 48, 47, ...
[ "nonn" ]
A031873
[ 1, 2, 7, 11, 24, 27, 35, 42, 54, 56 ]
[ "nonn", "fini", "full" ]
A061500
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 5, 6, 9, 12, 15, 18, 21, 24, 27, 30, 11, 9, 12, 15, 18, 21, 24, 27, 30, 33, 16, 12, 15, 18, 21, 24, 27, 30, 33, 36, 22, 15, 18, 21, 24, 27, 30, 33, 36, 39, 27, 18, 21, 24, 27, 30, ...
[ "base", "nonn" ]
A122924
[ 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 2, 0, 1, 0, 1, 2, 0, 1, 0, 1, 2, 0, 1, 0, 1, 2, 0, 2, 0, 1, 3, 1, 2, 1, 2, 0, 1, 3, 1, 2, 1, 2, 0, 1, 3, 1, 2, 2, 2, 1, 0, 3, 1, 3, 1, 2, 1, 2...
[ "nonn" ]
A253300
[ 6, 5, 8, 5, 8, 2, 3, 5, 4, 1, 0, 9, 0, 9, 3, 5, 6, 5, 4, 6, 9, 6, 5, 6, 8, 5, 3, 4, 0, 3, 6, 4, 4, 1, 7, 0, 1, 5, 6, 4, 0, 5, 8, 9, 2, 7, 7, 3, 3, 6, 2, 4, 6, 1, 1, 3, 3, 7, 5, 8, 6, 2, 6, 4...
[ "nonn", "cons", "easy" ]
A229862
[ 5, 6, 7, 8, 14, 16, 41, 46, 56, 58, 64, 92, 96, 114, 946, 3307, 3325, 5186, 5566, 6596, 6874, 7982, 8104, 14621, 17386, 27024, 44217, 45970, 84026, 91282, 135592, 167786, 1077378, 1231058, 1529394, 2667584, 2873910, 3098834, 3978336, 4292...
[ "nonn" ]
A181063
[ 1, 2, 6, 12, 3960, 60, 420, 840, 17907120, 2520, 411863760, 27720, 68502634200, 447069823200, 360360, 720720, 7600186994400, 12252240, 9524356075634400, 81909462250455840, 1149071006394511200, 232792560, 35621201198229850000, 5354228880, 91351145008363630000 ]
[ "nonn" ]
A044140
[ 51, 100, 149, 198, 247, 296, 345, 357, 394, 443, 492, 541, 590, 639, 688, 700, 737, 786, 835, 884, 933, 982, 1031, 1043, 1080, 1129, 1178, 1227, 1276, 1325, 1374, 1386, 1423, 1472, 1521, 1570, 1619, 1668, 1717, 1729, 1766, 1815 ]
[ "nonn", "base" ]
A360236
[ 1, 1, 6, 66, 1028, 20138, 464863, 12162876, 351915528, 11075859686, 374858234365, 13530279602015, 517628371405448, 20890826296067330, 886175281852068600, 39393952245422500000, 1.8307812835371844e+21, 8.876894416670179e+22, 4.4827970263861657e+24, 2.354176964624561e+26 ]
[ "nonn" ]
A352919
[ 1, 4, 9, 16, 76, 162, 418, 1892, 19094, 19298, 20059, 84653, 174566, 1688099 ]
[ "nonn", "more" ]
A277100
[ 1, 1, 1, 1, 2, 1, 4, 1, 5, 2, 7, 4, 10, 5, 15, 6, 1, 21, 8, 1, 28, 13, 1, 37, 18, 1, 50, 25, 2, 67, 31, 3, 88, 42, 5, 115, 55, 6, 150, 73, 8, 193, 93, 11, 248, 122, 15, 317, 154, 19, 402, 200, 24, 1, 508, 2...
[ "nonn", "tabf" ]
A316237
[ 13, 125, 153, 1135, 6518, 42075, 496125, 5256306, 54317972, 654763535, 7692611164, 87530324083, 1030945146251, 12126445090240, 141144001467291, 1653160662473734, 19389401589773948, 226787823459888600 ]
[ "nonn" ]
A159164
[ 1, 37, 895, 18269, 344845, 6284126, 113143395, 2040278015, 37168888376 ]
[ "nonn" ]
A057578
[ 1, 1, 1, 3, 9, 18, 38 ]
[ "nonn", "more" ]
A320533
[ 1, 7, 13, 19, 37, 49, 53, 61, 89, 91, 113, 131, 133, 151, 161, 169, 223, 247, 251, 259, 281, 299, 311, 329, 343, 359, 361, 371, 377, 427, 437, 463, 481, 503, 593, 611, 623, 637, 659, 667, 689, 703, 719, 721, 791, 793, 827, ...
[ "nonn" ]
A144495
[ 2, 7, 30, 155, 946, 6687, 53822, 486355, 4877250, 53759351, 646098622, 8409146187, 117836551730, 1768850337295, 28318532194206, 481652022466307, 8673291031865602, 164849403644999650, 3297954931572397600, 69274457019123640000, 1.5243687200866826e+21 ]
[ "nonn" ]
A272590
[ 2, 8, 24, 120, 840, 9240, 120120, 2042040, 38798760, 892371480, 25878772920, 802241960520, 29682952539240, 1217001054108840, 52331045326680120, 2459559130353965600, 130356633908760180000, 7.691041400616851e+21, 4.691535254376279e+23, 3.143328620432107e+25 ]
[ "nonn" ]
A330214
[ 2, 5, 8, 10, 13, 16, 18, 21, 24, 26, 30, 33, 36, 38, 41, 44, 46, 49, 52, 54, 58, 61, 63, 66, 69, 72, 74, 77, 80, 82, 86, 89, 91, 94, 97, 99, 102, 105, 108, 110, 114, 117, 119, 122, 125, 127, 130, 133, 135, 138, 142, ...
[ "nonn", "easy" ]