id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A111711
[ 1, 2, 5, 8, 14, 19, 28, 35, 47, 56, 71, 82, 100, 113, 134, 149, 173, 190, 217, 236, 266, 287, 320, 343, 379, 404, 443, 470, 512, 541, 586, 617, 665, 698, 749, 784, 838, 875, 932, 971, 1031, 1072, 1135, 1178, 1244, 1289, 1358, 1405, 1477, 1526, 1601, 1652 ]
[ "easy", "nonn" ]
A370798
[ 1, 2, 5, 15, 52, 200, 824, 3549, 15745, 71343, 328537, 1532838, 7230341, 34425026, 165230211, 798643501, 3884110353, 18993027790, 93325418867, 460562269745, 2281769792691, 11344607718373, 56585135577335, 283067227288767, 1419859530338142, 7139644680794750 ]
[ "nonn" ]
A094211
[ 1, 2, 3434, 232562, 42484682, 4653367842, 644032289258, 79450506979090, 10353832741654602, 1313930226050848000, 168883831255263800000, 2.1573903987107974e+22, 2.764126124873404e+24, 3.536436666231933e+26, 4.527653508789399e+28 ]
[ "nonn", "easy" ]
A026444
[ 1, 3, 4, 7, 8, 11, 12, 15, 16, 19, 20, 24, 25, 28, 29, 32, 33, 36, 37, 40, 41, 44, 45, 48, 49, 52, 53, 56, 57, 60, 61, 64, 65, 68, 69, 72, 73, 76, 80, 81, 84, 85, 88, 91, 92, 95, 96, 99, 100, 103, 104, 108, 109, 112, 115, 116, 119, 120, 123 ]
[ "nonn" ]
A043539
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 ]
[ "nonn", "base" ]
A306529
[ 1, 3, 3, 13, 5, 39, 59, 7, 23, 221, 59, 9, 9, 477, 31, 2175, 103, 8807, 41571, 8005, 13, 2047, 2999, 127539, 527593, 15, 15, 2489, 1917, 373, 340551, 11759, 9409, 4109, 52778687, 801, 19, 137913, 113759383, 137, 16437, 12311, 21, 21, 15732537, 1275, 1729, 7204587, 305987, 67 ]
[ "nonn" ]
A154698
[ 2, 5, 5, 13, 96, 13, 35, 1170, 1170, 35, 97, 12948, 39312, 12948, 97, 275, 142170, 986760, 986760, 142170, 275, 793, 1585368, 22077900, 47364480, 22077900, 1585368, 793, 2315, 18009750, 470999340, 1846449000, 1846449000, 470999340, 18009750, 2315 ]
[ "nonn", "tabl" ]
A228915
[ 10, 11, 12, 13, 14, 15, 16, 17, 18, 100, 20, 21, 22, 23, 24, 25, 26, 27, 28, 101, 30, 31, 32, 33, 34, 35, 36, 37, 38, 102, 40, 41, 42, 43, 44, 45, 46, 47, 48, 103, 50, 51, 52, 53, 54, 55, 56, 57, 58, 104, 60, 61, 62, 63, 64, 65, 66, 67, 68, 105, 70, 71, 72 ]
[ "base", "nonn" ]
A065902
[ 7, 79, 127, 7, 647, 2399, 23, 937, 4999, 14639, 1481, 28559, 19207, 23, 31, 47, 73, 18617, 79999, 194479, 117127, 5711, 165887, 73, 4663, 113, 233, 707279, 47, 40153, 524287, 191, 167, 257, 439, 267737, 45329, 2313439, 182857, 2825759, 1555847 ]
[ "nonn" ]
A084074
[ 0, 2, 3, 4, 6, 8, 19, 98, 174, 578, 678, 966, 1792, 4132, 5772, 10947, 27148, 30198, 32731 ]
[ "nonn", "more" ]
A238434
[ 1, 1, 1, 1, 1, 2, 3, 4, 6, 9, 13, 19, 28, 42, 62, 91, 135, 200, 296, 438, 648, 960, 1421, 2103, 3114, 4611, 6827, 10107, 14964, 22157, 32806, 48572, 71917, 106483, 157661, 233436, 345632, 511755, 757720, 1121901, 1661122, 2459512, 3641632, 5391915, 7983443, 11820547, 17501885, 25913856, 38368900, 56810249 ]
[ "nonn" ]
A082913
[ 2, 4, 31, 1674, 4989191, 44334502845080, 3.5007835828750293e+27, 2.1827907538883638e+55 ]
[ "nonn" ]
A034161
[ 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 7, 8, 10, 12, 14, 16, 19, 21, 24, 27, 29, 31, 33, 34, 35, 36, 36, 36, 36, 35, 34, 33, 31, 29, 27, 24, 21, 19, 16, 14, 12, 10, 8, 7, 5, 4, 3, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
[ "nonn" ]
A299546
[ 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 21, 23, 24, 26, 27, 28, 29, 31, 32, 33, 35, 36, 37, 39, 40, 41, 43, 44, 45, 47, 48, 50, 52, 53, 54, 57, 59, 60, 62, 63, 64, 67, 68, 70, 71, 72, 75, 76, 78, 79, 80, 83, 84, 86, 87, 88, 91, 92, 94, 95, 96, 98, 100, 101 ]
[ "nonn", "easy" ]
A387160
[ 2, 3, 7, 20, 27, 28, 31, 127, 496, 567, 775, 2268, 3100, 8128, 8191, 27783, 131071, 403172, 524287, 3628548, 17389708, 32656932, 33550336, 127926848, 1087307452, 1248461136, 1408566348, 2147483647, 7802882100, 8589869056, 9785767068, 10362074688, 31211528400, 88071903612 ]
[ "nonn" ]
A090462
[ 5, 4, 2, 2, 1, 1, 4, 1, 9, 7, 3, 7, 7, 4, 5, 1, 1, 0, 5, 6, 4, 4, 0, 7, 5, 3, 0, 4, 3, 1, 2, 8, 0, 3, 1, 0, 4, 0, 6, 3, 8, 9, 3, 7, 0, 5, 8, 7, 0, 4, 7, 4, 7, 0, 4, 1, 5, 5, 6, 5, 9, 0, 1, 3, 1, 9, 4, 8, 0, 8, 9, 8, 0, 4, 3, 5, 0, 9, 3, 0, 7, 4, 9, 5, 1, 8, 7, 6, 5, 2, 0, 4, 2, 7, 7, 6, 9, 2, 3, 5, 9, 6 ]
[ "nonn", "cons" ]
A021294
[ 1, 23, 368, 5098, 65559, 806541, 9640606, 112964816, 1304876837, 14914020979, 169097614764, 1905464222454, 21368620595635, 238731453906137, 2659135639187642, 29548298847110812, 327711548662770750 ]
[ "nonn", "easy" ]
A108699
[ 1, 3, 20, 630, 59976, 61631856, 218220912000, 11776702254660000, 3.875704211027805e+21, 1.609807419980025e+28, 4.267438582189764e+35 ]
[ "nonn" ]
A058795
[ 7, 85, 301, 751, 1555, 2857, 4825, 7651, 11551, 16765, 23557, 32215, 43051, 56401, 72625, 92107, 115255, 142501, 174301, 211135, 253507, 301945, 357001, 419251, 489295, 567757, 655285, 752551, 860251, 979105, 1109857, 1253275, 1410151 ]
[ "nonn", "easy" ]
A209513
[ 14739, 951777, 62340543, 4099186545, 269845393359, 17769569448759, 1170258116647953, 77072446894479570, 5075985987097378000, 334304949001956100000, 2.201737459196939e+22, 1.4500679580511275e+24 ]
[ "nonn" ]
A353182
[ 9, 9, 252, 333, 7704, 11430, 245520, 388485, 8018280, 13221234, 266135472, 451623042, 8935693776, 15488764524, 302623991712, 533189070405, 10317992397480, 18416195186490, 353689409441520, 637974569854998, 12177584747670384, 22158431087271444, 420819143651579260, 771390571080374700 ]
[ "nonn", "base", "easy" ]
A148514
[ 1, 1, 3, 5, 17, 36, 134, 335, 1333, 3732, 15504, 46870, 200458, 640494, 2798585, 9330139, 41453055, 142971527, 643754048, 2282825370, 10391082024, 37709321557, 173189706730, 640888377597, 2965484008829, 11158376134888, 51957479350157, 198344225237265, 928535979959713, 3589580096542716 ]
[ "nonn", "walk" ]
A050777
[ 38400, 6, 10, 26, 8, 18, 4, 39, 16, 30, 27, 32, 126, 76, 92, 87, 63, 77, 122, 49, 62, 120, 56, 50, 45, 117, 110, 196, 88, 102, 75, 246, 171, 72, 70, 234, 60, 469, 66, 217, 260, 198, 244, 387, 550, 230, 528, 362, 519, 764, 500, 494, 566, 376, 548, 386, 526, 481 ]
[ "nonn" ]
A024017
[ 1, 1, -124, -2179, -16368, -78093, -279872, -823415, -2096896, -4782457, -9998976, -19485123, -35827712, -62740325, -105397120, -170826607, -268369920, -410207601, -611957888, -893347451, -1278951424, -1798991389, -2490163584, -3396436839 ]
[ "sign", "easy" ]
A236966
[ 0, 0, 1, 1, 1, 1, 3, 2, 1, 3, 2, 1, 2, 2, 5, 6, 3, 4, 3, 5, 4, 5, 7, 9, 3, 5, 2, 10, 7, 7, 7, 7, 9, 5, 10, 4, 5, 7, 12, 11, 14, 6, 7, 5, 10, 9, 8, 5, 12, 15, 14, 8, 12, 11, 16, 12, 16, 9, 12, 10, 10, 14, 15, 10, 12, 14, 9, 10, 21, 9, 22, 21, 11, 9, 18, 24, 20, 17, 17, 16 ]
[ "nonn" ]
A374340
[ 1, 1, -3, 8, -21, -12167, -1708047, -116428560, -33081320935, -1098860747703, -579469550006151 ]
[ "sign", "hard", "more" ]
A266474
[ 8, 42, 303, 2574, 22128, 175180, 1231170, 7652503, 42460424, 212971589, 977395362, 4147719749, 16420984346, 61103700814, 215040758842, 719522481940, 2299243641848, 7043942786447, 20758083457211, 59015575393057 ]
[ "nonn" ]
A273154
[ 1, 2, 4, 8, 14, 26, 48, 88, 160, 292, 532, 972, 1768, 3220, 5866, 10686, 19454, 35430, 64528, 117520, 214004, 389724, 709730, 1292496, 2353758, 4286442, 7806048, 14215620, 25888034, 47144704, 85855230, 156350996, 284730756, 518523184, 944282620 ]
[ "nonn", "more" ]
A352243
[ 7, 19, 37, 52, 61, 91, 112, 127, 169, 189, 196, 217, 271, 304, 331, 351, 397, 436, 469, 496, 547, 567, 592, 631, 721, 772, 817, 832, 837, 919, 976, 1027, 1075, 1141, 1161, 1204, 1261, 1264, 1387, 1456, 1519, 1539, 1657, 1675, 1732, 1792, 1801, 1951, 1971, 2032, 2052 ]
[ "nonn" ]
A121038
[ 18, 180, 918, 1188, 1800, 1818, 1836, 1854, 1872, 1890, 2718, 3186, 3618, 4518, 5184, 5418, 6318, 7182, 7218, 8118, 9018, 9180, 9918, 10188, 10818, 11718, 11808, 11826, 11844, 11862, 11880, 11898, 12186, 12618, 13518, 14184, 14418, 15318, 16182 ]
[ "nonn", "base", "easy" ]
A327588
[ 0, 1, 7, 62, 642, 7784, 108824, 1725072, 30605384, 601213744, 12958778704, 304145108160, 7722286425312, 210920029636224, 6166996162239840, 192199468584942820, 6360760834966301000, 222782888877269940000, 8.233066075880952e+21, 3.201624582656912e+23 ]
[ "nonn" ]
A333468
[ 1, 2, 2, 3, 5, 6, 3, 4, 9, 4, 7, 10, 9, 14, 4, 5, 7, 18, 8, 10, 7, 7, 14, 11, 6, 26, 12, 9, 29, 30, 5, 6, 33, 11, 21, 6, 11, 15, 22, 27, 41, 6, 17, 8, 8, 7, 22, 24, 15, 50, 28, 8, 53, 18, 22, 14, 25, 9, 15, 55, 14, 50, 6, 7, 65, 11, 19, 34, 69, 23, 35, 14, 22, 74, 10 ]
[ "nonn" ]
A116769
[ 1, 2, 6, 21, 76, 263, 843, 2501, 6941, 18245, 45928, 111721, 264482, 612707, 1394929, 3131269, 6948043, 15269985, 33290710, 72085673, 155182152, 332387343, 708820807, 1505731877, 3187639497, 6727621949, 14159916404, 29729158217 ]
[ "nonn", "easy" ]
A307010
[ 367, 687331, 1983913, 2278033, 2400793, 2760361, 3531247, 5840767, 9429223, 11894593, 13201483, 13371751, 13597357, 13755361, 19782127, 24772663, 25607341, 34723783, 51279127, 56208967, 59215327, 71039257, 74498731, 83170537, 97983187, 109510909, 124762969 ]
[ "nonn" ]
A037966
[ 0, 1, 8, 54, 320, 1750, 9072, 45276, 219648, 1042470, 4862000, 22355476, 101582208, 457002364, 2038517600, 9026235000, 39710085120, 173712232710, 756088415280, 3276123843300, 14138105520000, 60790319209620, 260516811228960, 1113068351807880, 4742456099097600, 20154752301937500, 85453569951920350 ]
[ "nonn", "easy" ]
A199656
[ 1, 1, 3, 1, 7, 19, 1, 15, 65, 175, 1, 31, 211, 781, 2101, 1, 63, 665, 3367, 11529, 31031, 1, 127, 2059, 14197, 61741, 201811, 543607, 1, 255, 6305, 58975, 325089, 1288991, 4085185, 11012415, 1, 511, 19171, 242461, 1690981, 8124571, 30275911, 93864121, 253202761 ]
[ "nonn", "easy", "tabl" ]
A107612
[ 2, 211, 2111, 111121, 111211, 112111, 1111211, 1111111121, 1111211111, 1121111111, 111111211111, 111211111111, 2111111111111, 111111111111112110, 111111112111111100, 111111211111111100, 112111111111111100 ]
[ "base", "nonn" ]
A332748
[ 1, 1, 4, 18, 124, 738, 7464, 55890, 668778, 7030210, 90713844, 1054221258, 18597735744, 242795838520 ]
[ "nonn", "more" ]
A142365
[ 61, 719, 907, 1283, 1471, 1753, 1847, 2129, 2411, 2693, 3163, 3257, 3539, 3727, 3821, 5231, 5419, 5701, 6359, 6547, 6829, 7393, 7487, 8521, 8803, 9461, 9649, 9743, 9931, 10589, 11059, 11717, 12281, 13033, 13127, 13597, 13691, 13879, 14537, 15101, 15289 ]
[ "nonn", "easy" ]
A055440
[ 1, 2, 1, 3, 1, 4, 2, 5, 1, 6, 3, 1, 2, 7, 8, 1, 4, 9, 2, 1, 3, 5, 1, 2, 6, 1, 4, 3, 1, 2, 7, 1, 5, 8, 2, 1, 3, 4, 1, 9, 6, 2, 1, 3, 1, 5, 2, 4, 7, 1, 3, 1, 2, 8, 6, 1, 4, 2, 1, 5, 3, 9, 1, 2, 7, 1, 3, 4, 1, 2, 6, 5, 1, 8, 2, 1, 3, 4, 1, 2, 7, 1, 9, 3, 5, 6, 1, 2, 4, 1, 3, 1, 2, 8, 1, 5, 2, 1, 4, 7, 3, 6, 1, 2, 9 ]
[ "nonn", "base" ]
A018641
[ 1, 3, 7, 21, 37, 111, 259, 777 ]
[ "nonn", "fini", "full", "easy" ]
A148716
[ 1, 1, 3, 7, 24, 70, 264, 871, 3445, 12209, 49965, 186006, 778897, 3005994, 12798041, 50759402, 218926582, 887015121, 3865566214, 15933181036, 70025009803, 292737848952, 1295655376440, 5480826330146, 24403529986073, 104271056911262, 466660480654007, 2011199904443749, 9041319778456308 ]
[ "nonn", "walk" ]
A349919
[ 0, 0, 5, 27, 90, 230, 495, 945, 1652, 2700, 4185, 6215, 8910, 12402, 16835, 22365, 29160, 37400, 47277, 58995, 72770, 88830, 107415, 128777, 153180, 180900, 212225, 247455, 286902, 330890, 379755, 433845, 493520, 559152, 631125, 709835, 795690, 889110, 990527, 1100385, 1219140, 1347260, 1485225, 1633527, 1792670 ]
[ "nonn", "easy" ]
A276571
[ 0, 1, 2, 2, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15 ]
[ "nonn" ]
A081126
[ 1, 2, 5, 16, 53, 206, 817, 3620, 16361, 80218, 401501, 2139512, 11641885, 66599846, 388962953, 2367284236, 14700573137, 94523836850, 619674301621, 4186249123808, 28809504493061, 203556335785342, 1463877667140065 ]
[ "dead" ]
A375313
[ 5, 11, 17, 41, 307, 1447, 2377, 3163, 3253, 3457, 4783, 5653, 6547, 7873, 9007, 11171, 11827, 16061, 16187, 19423, 20743, 20897, 21313, 21517, 26107, 27103, 29017, 29021, 33613, 34123, 34841, 34843, 36011, 38917, 39227, 40693, 41177, 47737, 51341, 55213 ]
[ "nonn", "base" ]
A144555
[ 0, 14, 56, 126, 224, 350, 504, 686, 896, 1134, 1400, 1694, 2016, 2366, 2744, 3150, 3584, 4046, 4536, 5054, 5600, 6174, 6776, 7406, 8064, 8750, 9464, 10206, 10976, 11774, 12600, 13454, 14336, 15246, 16184, 17150, 18144, 19166, 20216, 21294, 22400, 23534, 24696 ]
[ "nonn", "easy" ]
A246435
[ 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9 ]
[ "nonn", "base", "easy" ]
A192392
[ 1, 32, 654, 97108, 1413121115, 212019181716, 28272625222324, 3635343331293032, 454443424140393860, 55545352514948470000, 6.665646362616059e+21, 7.877767574737272e+23, 9.190898887868585e+25, 9.998979695949393e+33 ]
[ "nonn", "base" ]
A361307
[ 1, 1, 15, 462, 20719, 1187628, 81575478, 6470236914, 578865763791, 57491440616067, 6266161502595672, 743009082083639800, 95191896469891630000, 1.3103364445591715e+22, 1.9288200203286863e+24, 3.0238396978542795e+26, 5.0307405653295945e+28 ]
[ "nonn" ]
A029833
[ 0, 1, 1, 0, 2, 0, 2, 0, 0, 0, 2, 0, 3, 0, 0, 0, 3, 0, 3, 0, 0, 0, 3, 0, 0, 0, 0, 0, 3, 0, 3, 0, 0, 0, 0, 0, 4, 0, 0, 0, 4, 0, 4, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 4, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 4, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 5, 0, 5, 0, 0, 0, 5, 0, 5, 0, 0, 0, 5, 0, 0 ]
[ "nonn", "easy" ]
A178016
[ 1, 3, 30, 360, 6660, 246600, 8856540, 477856260, 43857223200, 3365164845000, 359195930427600, 61064307564624000 ]
[ "nonn" ]
A227393
[ 1, 124, 12471013, 12471013161922, 12471013161922253000, 1.2471013161922225e+26, 1.2471013161922225e+32, 1.2471013161922225e+38 ]
[ "nonn", "less", "base" ]
A313422
[ 1, 5, 10, 13, 19, 22, 33, 32, 45, 38, 51, 45, 62, 59, 78, 69, 84, 71, 91, 80, 109, 96, 123, 98, 125, 103, 134, 121, 154, 133, 158, 131, 165, 138, 185, 158, 199, 158, 199, 163, 208, 183, 230, 195, 230, 191, 239, 198, 263, 220 ]
[ "nonn" ]
A372880
[ 1, 3, 12, 36, 612, 1836, 168912, 10810368, 16366897152, 51703028103168, 1563447866811697200, 2.352017200357594e+25, 1.1555581634242679e+33, 1.2369352104691609e+46 ]
[ "nonn", "base", "more" ]
A311115
[ 1, 4, 8, 12, 15, 23, 24, 33, 29, 42, 40, 50, 50, 58, 58, 64, 67, 77, 74, 85, 81, 94, 90, 102, 102, 108, 110, 116, 119, 127, 126, 137, 131, 146, 142, 154, 152, 160, 162, 166, 171, 179, 178, 187, 183, 198, 192, 206, 204, 212 ]
[ "nonn" ]
A214178
[ 0, 1, 0, 1, 1, 0, 2, 2, 2, 0, 3, 5, 6, 6, 0, 5, 10, 18, 24, 24, 0, 8, 20, 44, 84, 120, 120, 0, 13, 38, 102, 240, 480, 720, 720, 0, 21, 71, 222, 630, 1560, 3240, 5040, 5040, 0, 34, 130, 466, 1536, 4560, 11760, 25200, 40320, 40320, 0, 55, 235, 948, 3564, 12264 ]
[ "nonn", "tabl" ]
A186819
[ 2904, 25808, 222632, 2009622, 18829218, 175882357, 1653336285, 15639380661, 147826932337, 1399067559974, 13257222778967, 125596828357521, 1190237476340344, 11282323553231804, 106939751216903920 ]
[ "nonn" ]
A190993
[ 0, 0, 0, 1, 2, 1, 4, 4, 5, 9, 6, 8, 0, 8, 16, 34, 26, 76, 84, 85, 41, 130, 22, 96, 143, 496, 289, 169, 842, 140, 296, 669, 2684, 1449, 343, 4096, 7583, 592, 665, 11682, 699, 20452, 2872, 22037, 6477, 21826, 17999, 93009, 46080, 31240, 121681, 8638, 317523 ]
[ "nonn" ]
A040184
[ 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 37, 43, 47, 53, 59, 67, 73, 79, 83, 89, 97, 103, 107, 109, 113, 127, 137, 139, 149, 157, 163, 167, 173, 179, 193, 197, 199, 211, 223, 227, 229, 233, 239, 257, 263, 269, 271, 277 ]
[ "nonn", "easy" ]
A242177
[ 34, 1980, 9898 ]
[ "nonn", "more", "bref" ]
A054671
[ 2, 8, 4, 128, 1, 1024, 16, 32768, 1, 262144, 32, 4194304, 1, 33554432, 512, 2147483648, 1, 17179869184, 2048, 274877906944, 64, 2199023255552, 2048, 70368744177664, 1, 562949953421312, 131072, 9007199254740992, 256 ]
[ "frac", "nonn" ]
A141511
[ 1, 2, 3, 13, 40, 313, 1833, 27784, 312227, 9039597, 194485968, 10791499905, 444739929613, 47257907376576, 3730171679762583, 759195182636849000, 114775951820515670000, 4.474168844906427e+22 ]
[ "nonn" ]
A232968
[ 1, 1, 1, 1, 4, 1, 1, 7, 12, 1, 1, 10, 33, 36, 1, 1, 13, 63, 143, 108, 1, 1, 16, 102, 341, 609, 324, 1, 1, 19, 150, 656, 1748, 2583, 972, 1, 1, 22, 207, 1115, 3860, 8773, 10945, 2916, 1, 1, 25, 273, 1745, 7376, 21756, 43653, 46367, 8748, 1, 1, 28, 348, 2573, 12809, 45801, 119948, 216434, 196417, 26244, 1 ]
[ "nonn", "tabl" ]
A182162
[ 1, 2, 12, 192, 24, 8160, 2400, 898560, 384480, 14400, 245145600, 126040320, 9777600, 50400, 159035627520, 90043269120, 9660672000, 179222400, 80640, 237882053283840, 141969202744320, 17961178152960, 547498828800, 2586608640, 802369403419852800 ]
[ "nonn", "tabf" ]
A154975
[ 9, 8, 1, 6, 3, 7, 5, 1, 3, 4, 0, 9, 9, 1, 2, 1, 3, 4, 2, 0, 3, 4, 3, 0, 1, 9, 6, 2, 4, 7, 2, 2, 7, 9, 2, 6, 2, 8, 6, 6, 4, 0, 2, 7, 3, 1, 3, 2, 0, 8, 8, 7, 6, 3, 2, 6, 5, 8, 6, 4, 8, 5, 2, 3, 9, 6, 6, 1, 7, 6, 8, 5, 5, 7, 8, 1, 4, 9, 1, 1, 5, 8, 0, 0, 5, 0, 0, 1, 4, 5, 7, 0, 8, 1, 6, 3, 9, 7, 6 ]
[ "nonn", "cons" ]
A193289
[ 1, 2, 16, 116, 1456, 18272, 315424, 5592512, 123304192, 2814746624, 75639399424, 2108241486848, 66872341633024, 2198914617257984, 80437062279012350, 3046047243283570700, 126259635313097500000, 5.408763597941369e+21, 2.5056931467258616e+23 ]
[ "nonn" ]
A165876
[ 1, 16, 240, 3600, 54000, 810000, 12150000, 182250000, 2733750000, 41006250000, 615093749880, 9226406246400, 138396093669120, 2075941404633600, 31139121063456000, 467086815861120000, 7006302236556000000 ]
[ "nonn" ]
A043201
[ 31, 39, 112, 120, 193, 201, 274, 279, 351, 363, 436, 444, 517, 525, 598, 606, 679, 687, 760, 768, 841, 849, 922, 930, 1003, 1008, 1080, 1092, 1165, 1173, 1246, 1254, 1327, 1335, 1408, 1416, 1489, 1497, 1570, 1578, 1651, 1659 ]
[ "nonn", "base" ]
A129858
[ 6, 12, 12, 20, 21, 20, 30, 32, 32, 30, 42, 45, 45, 45, 42, 56, 60, 59, 59, 60, 56, 72, 77, 74, 72, 74, 77, 72, 90, 96, 90, 84, 84, 90, 96, 90, 110, 117, 107, 95, 90, 95, 107, 117, 110, 132, 140, 125, 105, 92, 92, 105, 125, 140, 132, 156, 165, 144, 114, 90, 81, 90, 114, 144 ]
[ "nonn", "tabl" ]
A173034
[ 1, 5, 20, 52, 116, 244, 500, 1012, 2036, 4084, 8180, 16372, 32756, 65524, 131060, 262132, 524276, 1048564, 2097140, 4194292, 8388596, 16777204, 33554420, 67108852, 134217716, 268435444, 536870900, 1073741812, 2147483636 ]
[ "easy", "nonn" ]
A377840
[ 1, 1, 1, 1, 2, 46, 496, 3004, 12872, 43912, 130816, 394384, 1470944, 6874336, 33550336, 151869376, 622116992, 2353246336, 8589869056, 31961192704, 125858012672, 521796316672, 2199022206976, 9122012806144, 36758056208384, 144536687773696, 562949936644096 ]
[ "nonn", "easy" ]
A185265
[ 1, 2, 3, 6, 12, 22, 39, 70, 127, 231, 419, 759, 1375, 2492, 4517, 8187, 14838, 26892, 48739, 88335, 160099, 290164, 525894, 953132, 1727460, 3130855, 5674373, 10284254, 18639219, 33781788, 61226235, 110966650, 201116358, 364504015, 660628396, 1197325296, 2170036700, 3932982369, 7128151480 ]
[ "nonn", "easy" ]
A105491
[ 15, 312, 4263, 49112, 521640, 5329044, 53580450, 537427440, 5422899339, 55344162874, 573270663966, 6040762924560, 64851119605636, 709986204480672, 7931189102016852, 90430835147203730, 1052534895931584800 ]
[ "easy", "nonn", "changed" ]
A025089
[ 0, 3, 4, 19, 32, 79, 127, 283, 459, 940, 1520, 2982, 4826, 9171, 14838, 27581, 44628, 81557, 131961, 237995, 385085, 687158, 1111844, 1966764, 3182292, 5588259, 9041992, 15780103, 25532744, 44323195, 71716435, 123920827, 200508111, 345062176, 558322328, 957403026 ]
[ "nonn", "easy" ]
A072445
[ 1, 1, 1, 4, 40, 3044, 26894586 ]
[ "nonn", "more" ]
A207416
[ 14, 196, 720, 2760, 13260, 50139, 175903, 656508, 2338562, 7964440, 27387966, 93272992, 311246157, 1035796645, 3435764764, 11296068814, 36992161254, 120875903016, 393346541394, 1276189913811, 4133174774211, 13356263152094 ]
[ "nonn" ]
A254844
[ 794128, 1323795, 1795490, 3986282, 7695684, 15676281, 29838772, 55992976, 100413564, 176175692, 297995148, 493162840, 792361276, 1249168284, 1921781524, 2908426536, 4313307192, 6311925400, 9077791868, 12909434532, 18083815180 ]
[ "nonn" ]
A025500
[ 1, 1, 3, 6, 6, 8, 7, 8, 13, 12, 14, 11, 16, 18, 18, 21, 20, 21, 19, 21, 25, 24, 29, 31, 27, 32, 32, 34, 36, 37, 33, 39, 44, 43, 35, 37, 43, 44, 56, 45, 46, 48, 49, 57, 55, 54, 53, 54, 54, 66, 62, 65, 61, 63, 60, 69, 65, 68, 67, 66, 66, 74, 75, 77, 82, 74, 82, 77, 69, 82, 82, 92, 83 ]
[ "nonn" ]
A104945
[ 23, 67, 89, 11, 11, 13, 31, 41, 61, 17, 71, 19, 23, 29, 31, 13, 23, 43, 53, 37, 73, 83, 41, 43, 47, 53, 59, 61, 67, 97, 71, 17, 73, 37, 47, 67, 79, 83, 89, 19, 29, 59, 97, 79, 89, 11, 31, 41, 61, 71, 11, 11, 11, 11, 11, 11, 13, 31, 11, 41, 11, 11, 61, 11, 17, 71, 11, 11, 19 ]
[ "nonn", "base" ]
A250916
[ 1, 2, 14, 152, 2236, 41512, 930904, 24474368, 738241424, 25132379552, 953267419744, 39867845243008, 1822779782497216, 90453927667906690, 4842249786763759000, 278167945047964160000, 1.7069371221016503e+22, 1.1143749724089955e+24, 7.712620884603444e+25 ]
[ "nonn" ]
A062564
[ 22122, 44244, 51015, 61116, 66366, 71217, 81318, 88488, 91419, 132231, 147741, 153351, 161161, 174471, 195591, 201102, 243342, 264462, 285582, 312213, 354453, 375573, 396693, 402204, 423324, 465564, 486684, 510015, 513315, 534435, 576675, 597795, 603306 ]
[ "base", "nonn" ]
A190667
[ 1, 3, 5, 13, 30, 69, 160, 371, 859, 1990, 4610, 10679, 24738, 57306, 132750, 307517, 712367, 1650207, 3822725, 8855390, 20513621, 47520058, 110080805, 255003553, 590718900, 1368407674, 3169933385, 7343190086, 17010591104, 39405245720 ]
[ "nonn" ]
A152601
[ 1, 5, 40, 395, 4360, 51530, 637840, 8163095, 107140360, 1434252230, 19507077040, 268796321870, 3744480010960, 52647783144980, 746145741252640, 10648007952942096, 152877753577617150, 2206713692628578000 ]
[ "easy", "nonn" ]
A093271
[ 0, 71, 1426, 6603550, 9009940044, 8.008804004402002e+23, 10111115055555, 3300030388000808, 1.111101013333303e+26, 55555050508888810000, 5.555505050099999e+32, 8.888888880842222e+23, 2.2222022202205556e+25 ]
[ "base", "nonn" ]
A222712
[ 1, 2, 4, 6, 8, 24, 48, 72, 120, 192, 240, 336, 720, 960, 1440, 1872, 2016, 2880, 3360, 4032, 5760, 6720, 6912, 7392, 8640, 10080, 17280, 20160, 34560, 40320, 44352, 60480, 69120, 74880, 95040, 96768, 100800, 120960, 134784, 201600, 241920, 322560, 354816, 411840, 483840 ]
[ "nonn" ]
A215488
[ 1, 2, 3, 6, 7, 8, 15, 30, 31, 32, 33, 36, 67, 98, 165, 330, 331, 332, 333, 336, 337, 338, 345, 360, 691, 1022, 1353, 1686, 2377, 3068, 5445, 10890, 10891, 10892, 10893, 10896, 10897, 10898, 10905, 10920, 10921, 10922, 10923, 10926, 10957, 10988, 11055, 11220, 22111, 33002 ]
[ "nonn", "base", "easy" ]
A226018
[ 1, 2, 3, 25, 183, 6463, 599806, 10553830, 15377521, 211655508, 603977457, 609080388, 3637001051, 8073907744 ]
[ "nonn", "more" ]
A205148
[ 15, 35, 15, 35, 35, 77, 77, 143, 15, 35, 143, 143, 221, 77, 323, 143, 323, 143, 437, 35, 77, 143, 667, 221, 1517, 221, 143, 323, 35, 323, 77, 143, 143, 323, 2491, 143, 1517, 437, 221, 437, 323, 77, 221, 323, 323, 667, 899, 221, 437, 1517, 323, 899 ]
[ "nonn" ]
A069657
[ 0, 1, 2, 6, 24, 115, 628, 3818, 25455, 183968, 1428184, 11824098, 103794727, 961461179, 9360372700, 95448502365, 1016413911387, 11273822075837, 129950445723958, 1553488011957986, 19225242250821070, 245899882175001570, 3245812116097119000, 44155099624566610000 ]
[ "nonn" ]
A073540
[ 4, 6, 8, 9, 16, 24, 25, 27, 28, 32, 40, 49, 64, 81, 121, 125, 128, 169, 224, 243, 256, 289, 343, 360, 361, 496, 512, 529, 625, 672, 729, 841, 864, 936, 961, 1024, 1331, 1369, 1681, 1849, 2016, 2048, 2176, 2187, 2197, 2209, 2401, 2809, 3125, 3481, 3721, 4096 ]
[ "easy", "nonn" ]
A038665
[ 3, 8, 25, 84, 294, 1056, 3861, 14300, 53482, 201552, 764218, 2912168, 11143500, 42791040, 164812365, 636438060, 2463251010, 9552774000, 37112526990, 144410649240, 562724141460, 2195581527360, 8576490341250, 33537507830424, 131272552839204, 514285886020256, 2016472976564116 ]
[ "easy", "nonn" ]
A140357
[ 1, 2, 2, 4, 3, 6, 3, 7, 6, 9, 6, 12, 3, 9, 14, 7, 16, 7, 17, 10, 20, 7, 19, 15, 24, 7, 20, 22, 21, 25, 19, 30, 10, 28, 22, 34, 11, 31, 25, 37, 14, 37, 20, 43, 7, 23, 46, 7, 24, 49, 7, 24, 52, 7, 24, 54, 11, 35, 56, 14, 43, 52, 36, 63, 7, 25, 62, 21, 58, 39, 70, 7, 25, 66, 31, 73, 15, 48 ]
[ "easy", "nonn" ]
A002834
[ 48, 0, 0, 1096, 720, 52, 0, 3744, 16440 ]
[ "fini", "nonn", "full" ]
A042489
[ 1, 1, 4, 5, 9, 14, 79, 93, 172, 1297, 2766, 4063, 6829, 120156, 126985, 1643976, 1770961, 31750313, 33521274, 65271587, 164064448, 1213722723, 1377787171, 2591509894, 14335336641, 16926846535, 31262183176, 48189029711, 175829272309, 224018302020 ]
[ "nonn", "frac", "easy" ]
A125629
[ 1, -1, 0, 0, 0, 1, 2, 2, 1, 0, -1, -3, -5, -5, -3, 0, 4, 9, 13, 13, 8, -1, -13, -26, -35, -34, -20, 6, 40, 74, 95, 89, 48, -26, -120, -209, -258, -232, -111, 98, 355, 587, 699, 601, 245, -342, -1040, -1641, -1887, -1545, -504, 1137, 3023, 4568, 5073, 3936, 912 ]
[ "sign", "easy" ]
A195411
[ 6, 2, 9, 7, 8, 7, 2, 0, 2, 2, 0, 0, 9, 1, 5, 1, 1, 5, 5, 8, 4, 3, 1, 7, 8, 2, 0, 2, 0, 7, 6, 2, 4, 2, 9, 0, 1, 2, 4, 9, 2, 0, 7, 0, 2, 7, 5, 8, 5, 4, 9, 3, 4, 3, 9, 5, 9, 7, 0, 0, 0, 9, 8, 1, 3, 7, 7, 3, 1, 1, 3, 4, 1, 0, 7, 7, 9, 5, 2, 1, 2, 0, 6, 7, 3, 6, 7, 6, 7, 3, 0, 7, 0, 5, 6, 2, 8, 1, 4, 3 ]
[ "nonn", "cons" ]
A029814
[ 691, 4030, 187720, 1748240, 8257470, 28108912, 79126320, 184957760, 372624200, 712927150, 1315399280, 2215956080, 3470256400, 5399589680, 8348381600, 12217183680, 16911302590, 23524431840, 33299838520 ]
[ "nonn" ]
A008246
[ 1, 4, 10, 18, 30, 44, 60, 80, 106, 135, 168, 207, 248, 286, 330, 382, 436, 489, 548, 612, 676, 741, 816, 896, 974, 1055, 1142, 1231, 1324, 1420, 1522, 1626, 1730, 1837, 1948, 2064, 2188, 2313, 2440, 2572, 2704, 2835, 2974, 3121, 3272, 3420, 3572, 3730, 3886 ]
[ "nonn" ]
A080605
[ 1, 3, 3, 3, 5, 5, 5, 7, 7, 7, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11, 13, 13, 13, 13, 13, 15, 15, 15, 15, 15, 15, 15, 17, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 19, 21, 21, 21, 21, 21, 21, 21, 21, 21, 23, 23, 23, 23, 23, 23, 23, 23, 23, 25, 25, 25, 25, 25, 25, 25, 25, 25, 27 ]
[ "nonn" ]