id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A153930
[ 1, 2, 4, 13, 45, 293, 1880, 22810, 274047, 6160861, 137419960, 5755708030, 238764714329, 18607726818765, 1436358552064865, 208215628095796830, 29898827223053357000, 8.063377147636346e+21, 2.1540238142552025e+24 ]
[ "nonn" ]
A033445
[ 1, 0, 5, 22, 57, 116, 205, 330, 497, 712, 981, 1310, 1705, 2172, 2717, 3346, 4065, 4880, 5797, 6822, 7961, 9220, 10605, 12122, 13777, 15576, 17525, 19630, 21897, 24332, 26941, 29730, 32705, 35872, 39237, 42806, 46585, 50580, 54797, 59242,...
[ "nonn", "easy" ]
A325713
[ 1, 1, 2, 3, 5, 6, 10, 14, 19, 26, 37, 49, 66, 87, 115, 150, 193, 244, 309, 387, 479, 585, 714, 860, 1032, 1226, 1454, 1697, 1991, 2304, 2672, 3060, 3518, 3981, 4541, 5121, 5782, 6462, 7265, 8057, 9000, 9938, 11031, 12131, 13384,...
[ "nonn", "easy" ]
A316492
[ 1, 3, 5, 7, 9, 122, 576, 1422, 1876, 4122, 4576 ]
[ "nonn", "base", "fini", "full" ]
A181988
[ 1, 2, 2, 3, 3, 4, 4, 4, 5, 6, 6, 6, 7, 8, 8, 5, 9, 10, 10, 9, 11, 12, 12, 8, 13, 14, 14, 12, 15, 16, 16, 6, 17, 18, 18, 15, 19, 20, 20, 12, 21, 22, 22, 18, 23, 24, 24, 10, 25, 26, 26, 21, 27, 28, 28, 16, ...
[ "easy", "nonn" ]
A183146
[ 1, 1, 4, 16, 80, 407, 2221, 12380, 71196, 417016, 2484839, 15001779, 91603298, 564661194, 3509278042, 21964437947, 138330334357, 875977578584, 5574225259696, 35626247068500, 228592067446715, 1471959684881231 ]
[ "nonn" ]
A057421
[ 1024, 1296, 1458, 2500, 2592, 3750, 3072, 6480, 11250, 15552, 14580, 52500, 22500, 46080, 57024, 163296, 78750, 101376, 306250, 291600, 473850, 453600, 1968750, 1305600, 2095632, 652500, 1632960, 13162500, 3442500, 2114100, 4353750, 28540512, 9722592, ...
[ "nonn" ]
A235245
[ 66874, 152178, 359962, 1039502, 2965442, 9463558, 29462346, 98737622, 322636258, 1117067382, 3774395002, 13420696070, 46603012898, 169749671638, 604053459162, 2250894106886, 8193769097074, 31201221798150, 116002816755994 ]
[ "nonn" ]
A339270
[ 0, 1, 1, 2, 1, 2, 1, 2, 4, 1, 2, 3, 1, 2, 4, 5, 1, 2, 3, 1, 2, 3, 4, 6, 3, 1, 2, 1, 2, 4, 3, 4, 1, 2, 1, 2, 5, 3, 4, 5, 1, 2, 1, 2, 1, 2, 11, 3, 1, 2, 4, 1, 2, 5, 5, 5, 1, 2, 3, 1, 2, 10, 3, ...
[ "nonn" ]
A301849
[ -1, 0, 1, 0, -1, 1, 1, -1, -1, 0, 1, 1, -1, 0, 1, -1, -1, 0, 1, 0, -1, 1, 1, 0, -1, -1, 1, 1, -1, 0, 1, -1, -1, 0, 1, 0, -1, 1, 1, -1, -1, 0, 1, 1, -1, 0, 1, 0, -1, -1, 1, 0, -1, 1, 1, 0, -1, -1, 1, ...
[ "sign" ]
A355031
[ 1, 4, 8, 12, 16, 40, 24, 36, 90, 126, 48, 112, 546, 72, 108, 96, 160, 352, 168, 120, 256, 2475, 144, 588, 300, 320, 216, 448, 1216, 240, 810, 420, 288, 1040, 384, 660, 360, 640, 432, 1408, 540, 504, 480, 600, 648, 1176, 792,...
[ "nonn" ]
A295880
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 32, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 44, 49, 50, 51, 4...
[ "nonn" ]
A215052
[ 1, 4, 11, 25, 50, 92, 158, 257, 400, 600, 873, 1237, 1713, 2325, 3100, 4069, 5266, 6729, 8500, 10625, 13155, 16145, 19655, 23750, 28500, 33981, 40274, 47466, 55650, 64925, 75397, 87178, 100387, 115150, 131600, 149878, 170132, 192518, 217200...
[ "nonn", "easy" ]
A005681
[ 2, 4, 3, 2, 3, 1, 2, 4, 3, 1, 2, 3, 2, 4, 3, 2, 3, 1, 2, 3, 2, 4, 3, 1, 2, 4, 3, 2, 3, 1, 2, 4, 3, 1, 2, 3, 2, 4, 3, 1, 2, 4, 3, 2, 3, 1, 2, 3, 2, 4, 3, 2, 3, 1, 2, 4, 3, 1, 2, 3, 2, 4, 3, 2...
[ "nonn" ]
A145937
[ 1, 1, 1, 1, 5, 5, 19, 19, 161, 161, 4227, 4227, 156459, 156459, 12465353, 12465353, 2072728127, 2072728127, 654619864141, 654619864141, 416229285287827, 416229285287827, 526917547596105860, 526917547596105860 ]
[ "nonn" ]
A233839
[ 9828513, 1909001345, 370375897185, 71859538054209, 13941925875538976, 2704962047095587000, 524806929418457500000, 1.0182113784726268e+23, 1.9754968023727982e+25, 3.832787276517112e+27 ]
[ "nonn" ]
A270164
[ 1, 5, 5, 41, 12, 109, 16, 197, 40, 321, 60, 469, 84, 645, 112, 849, 144, 1081, 180, 1341, 220, 1629, 264, 1945, 312, 2289, 364, 2661, 420, 3061, 480, 3489, 544, 3945, 612, 4429, 684, 4941, 760, 5481, 840, 6049, 924, 6645, 1012, ...
[ "nonn", "easy" ]
A057980
[ 1, 0, 2, 0, 2, -6, 14, 0, 44, 0, 18, -214, 308, 0, 168, 0, 516, -2008, 2328, 0, 14232, -11124, 15552, -29556, 95592, 0, 244464, 0, 250344, -1012558, 1292240, -5809920, 11906420, 0, -5994822, -7669356, 64935420, 0, 40213980 ]
[ "sign" ]
A134604
[ 119, 161, 351, 595, 721, 845, 959, 1045, 1081, 1241, 1323, 1375, 1547, 1792, 1855, 2457, 2645, 2737, 3281, 3367, 3509, 3887, 3995, 4347, 4625, 4655, 4681, 5376, 5795, 6545, 6615, 6643, 6993, 7505, 7705, 7803, 7889, 8019, 9295, 9625, 105...
[ "nonn" ]
A175175
[ 1, 2, 2, 3, 3, 6, 5, 5, 6, 8, 7, 12, 7, 12, 11, 12, 8, 17, 10, 18, 19, 18, 14, 25, 18, 21, 23, 24, 19, 31, 21, 36, 28, 30, 25, 32, 27, 35, 24 ]
[ "nonn" ]
A298813
[ 1, 4, 9, 0, 2, 1, 6, 1, 2, 0, 0, 9, 9, 9, 5, 3, 6, 4, 8, 1, 1, 6, 3, 8, 6, 8, 4, 2, 3, 7, 8, 6, 2, 6, 7, 4, 2, 9, 0, 1, 2, 4, 2, 3, 0, 7, 3, 2, 4, 8, 9, 1, 0, 2, 4, 4, 1, 0, 8, 4, 9, 6, 3, 7...
[ "nonn", "easy", "cons" ]
A158353
[ 2, 3, 11, 14, 71, 101, 111, 114, 171, 1071, 1101, 1111, 1114, 1171, 11171, 14171, 71171, 101171, 111171, 114171, 171171, 1071171, 1101171, 1111171, 1114171, 1171171, 11171171, 14171171, 71171171, 101171171, 111171171, 114171171, 171171171, 1071171171...
[ "nonn", "word" ]
A351930
[ 1, 1, 1, 1, 0, -4, -14, -34, -34, 190, 1366, 5446, 11056, -30744, -421420, -2403764, -7434244, 9782396, 296347996, 2257819420, 9461601856, -1690329584, -395833164264, -3872875071064, -20629371958040, -17208144880024, 893208132927176, 10962683317693576 ]
[ "sign" ]
A136914
[ 0, 5, 25, 50, 95, 225, 250, 255, 500, 505, 950, 995, 2250, 2500, 2550, 5000, 5005, 5025, 5050, 5095, 9500, 9605, 9950, 9995, 22500, 22925, 25000, 25005, 25025, 25500, 25505, 50000, 50005, 50025, 50050, 50095, 50225, 50250, 50255, 50500, ...
[ "base", "nonn" ]
A253761
[ 423232, 8385264, 180950650, 3910850069, 84039781656, 1846710080356, 40521984254512, 888093532213932, 19448504644581220, 425890071302276400, 9326401606854318000, 204192712133948540000, 4.4704901098839144e+21 ]
[ "nonn" ]
A291172
[ 1, 4, 131, 14118, 2976853, 1013582110, 508233789579, 352755124921122, 324039613564554430, 380751174738424300000, 5.571759186571222e+23, 9.938068273120449e+26 ]
[ "nonn" ]
A035397
[ 1, 1, 2, 2, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 19, 21, 24, 27, 30, 34, 39, 44, 49, 55, 61, 67, 76, 84, 94, 105, 116, 128, 141, 155, 171, 189, 209, 229, 252, 275, 301, 330, 361, 395, 433, 472, 514, 560, 609,...
[ "nonn" ]
A178005
[ 7, 97, 977, 7877, 97777, 787777, 7877777, 77767777, 787777777, 8777777777, 79777777777, 777777779777, 7877777777777, 77777779777777, 778777777777777, 8777777777777777, 77797777777777780, 797777777777777800 ]
[ "nonn", "base" ]
A183361
[ 8748, 589824, 314928, 435600, 802944, 1679616, 3852288, 9437184, 23003136, 47775744, 95551488, 191102976, 389283840, 807469056, 1695744000, 3588489216, 7596343296, 16057958400, 33888927744, 71430045696, 150473539584 ]
[ "nonn" ]
A383500
[ 9, 11, 13, 15, 17, 19, 23, 25, 27, 29, 33, 35, 37, 39, 45, 47, 49, 55, 57, 59, 67, 69, 77, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 101, 103, 105, 107, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 12...
[ "nonn", "base", "easy" ]
A066221
[ 0, 3, 25, 231, 2619, 35695, 568503, 10349535, 211799311, 4809701439, 119952692895, 3257843882623, 95680443760575, 3020676745975551, 101990226254706560, 3666624057550245400, 139813029266338610000 ]
[ "nonn", "easy" ]
A230931
[ 8, 48, 232, 1242, 6896, 37984, 208172, 1142054, 6269172, 34409586, 188850410, 1036485334, 5688689754, 31221981876, 171359511448, 940494098820, 5161833500756, 28330347062146, 155489043088298, 853390273229980, 4683770286511852, 25706531669633084, 141088424473754080 ]
[ "nonn" ]
A218131
[ 0, 0, 240, 6480, 65280, 390000, 1678320, 5762400, 16773120, 43040160, 99990000, 214344240, 429960960, 815702160, 1475750640, 2562840000, 4294901760, 6975673920, 11019855600, 16983432720, 25599840000, 37822664880, 54875639280, 78310705440, 110074982400 ]
[ "nonn", "easy" ]
A261192
[ 2, 3, 5, 13, 53, 71, 97, 109, 179, 193, 271, 383, 419, 587, 659, 673, 811, 1433, 1543, 1627, 2221, 2357, 4051, 4339, 4919, 5651, 5783, 6619, 6983, 7877, 8053, 11969, 12739, 12911, 14629, 15233, 15287, 15737, 18131, 18743, 20627, 21163...
[ "nonn" ]
A293612
[ 0, 26, 588, 5376, 30660, 129780, 446292, 1315776, 3444012, 8198190, 18058040, 37285248, 72882264, 135925608, 243374040, 420468480, 703858344, 1145608002, 1818257364, 2821132160, 4288122300, 6397170780, 9381740940, 13544556480, 19273936500, 27063076950, 37532660256...
[ "nonn", "easy" ]
A114727
[ 2, 5, 7, 12, 31, 33, 37, 51, 80, 219, 221, 225, 271, 377, 590, 592, 594, 596, 600, 602, 604, 606, 610, 618, 620, 624, 626, 638, 666, 668, 676, 734, 792, 1024, 1605, 1607, 4358, 4360, 4362, 4364, 4366, 4368, 4370, 4372, 4376, 4...
[ "nonn" ]
A035992
[ 1, 2, 3, 4, 6, 9, 12, 17, 23, 31, 41, 55, 71, 93, 120, 154, 196, 250, 313, 395, 493, 614, 760, 941, 1155, 1419, 1733, 2113, 2565, 3112, 3756, 4531, 5445, 6533, 7815, 9338, 11120, 13230, 15697, 18599, 21986, 25960, 30578, 35980, ...
[ "nonn", "easy" ]
A383277
[ 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1...
[ "nonn", "easy" ]
A038421
[ 1, 4, 10, 20, 40, 57, 78, 105, 143, 191, 226, 258, 319, 382, 459, 507, 567, 639, 745, 839, 908, 969, 1098, 1214, 1315, 1419, 1525, 1635, 1800, 1931, 2034, 2152, 2339, 2490, 2648, 2767, 2942, 3100, 3315, 3490, 3612, 3799, 4034, 422...
[ "nonn" ]
A152408
[ 1, 2, 10, 74, 698, 7838, 100850, 1451454, 22985130, 395771314, 7343341450, 145794607514, 3079842702578, 68901387446398, 1626057773601090, 40345654620151200, 1049419439407261300, 28542192105057235000 ]
[ "nonn" ]
A149277
[ 1, 1, 4, 11, 42, 154, 612, 2465, 10171, 42692, 181338, 780134, 3384561, 14814551, 65278098, 289414959, 1290151950, 5776944067, 25982897662, 117268906634, 531182757836, 2412943462536, 10993079589220, 50205601064387, 229837749663298, 1054413465243401, 48468454543446...
[ "nonn", "walk" ]
A351193
[ 0, 32, 243, 32, 3125, 275, 16807, 32, 243, 3157, 161051, 275, 371293, 16839, 3368, 32, 1419857, 275, 2476099, 3157, 17050, 161083, 6436343, 275, 3125, 371325, 243, 16839, 20511149, 3400, 28629151, 32, 161294, 1419889, 19932, 275, 69343957, 24...
[ "nonn" ]
A162566
[ 2, 3, 5, 7, 11, 17, 19, 23, 29, 41, 43, 47, 53, 59, 67, 71, 79, 83, 101, 103, 107, 127, 131, 137, 139, 149, 163, 167, 173, 179, 191, 197, 223, 227, 233, 239, 251, 257, 263, 269, 281, 293, 307, 311, 347, 353, 359, 379, 38...
[ "nonn" ]
A076232
[ 1, 2, 4, 8, 2, 6, 4, 24, 18, 86, 54, 18, 22, 48, 12, 10, 56, 10, 8, 12, 24 ]
[ "nonn", "more" ]
A266964
[ 1, -1, -4, -5, -3, 23, 44, 104, 70, -93, -465, -1155, -1882, -1904, 804, 6195, 18755, 33296, 47327, 35198, -28493, -176199, -453792, -805453, -1126396, -1028297, -18994, 2946491, 8248080, 16444480, 25436984, 30736635, 22263981, -16098311, -10268157...
[ "sign" ]
A307942
[ 8, 148, 3376, 89390, 2624872, 82866636, 2755019736, 95135709027, 3380416782760, 122798718575216, 4539685792433848, 170225552910292450, 6458330316575589000, 247456381334355670000, 9.56154656298439e+21, 3.721418455745971e+23, 1.457595050101289e+25 ]
[ "nonn" ]
A328856
[ 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 3, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 3, 1, 1, 1, 4...
[ "nonn" ]
A009027
[ 1, -1, 0, 5, -27, 129, -654, 3695, -23475, 166727, -1309684, 11244309, -104234215, 1029821545, -10679924202, 113869873039, -1205722312839, 11744215117935, -79159333236840, -612589942020923, 48022885459499180, -1644758184992095700 ]
[ "sign", "easy" ]
A377598
[ 2, 3, 6, 11, 18, 19, 22, 27, 38, 43, 51, 54, 59, 66, 67, 83, 86, 102, 107, 114, 118, 123, 131, 134, 139, 146, 162, 163, 166, 171, 178, 179, 187, 198, 211, 214, 227, 242, 243, 246, 251, 258, 262, 267, 278, 283, 291, 307, ...
[ "nonn" ]
A225569
[ 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0...
[ "nonn", "easy", "cons" ]
A377214
[ 2, 3, 3, 5, 7, 5, 7, 11, 19, 23, 7, 11, 17, 23, 29, 41, 47, 11, 13, 29, 41, 53, 59, 71, 83, 89, 109, 113, 13, 17, 29, 41, 53, 71, 83, 103, 113, 127, 137, 151, 167, 17, 19, 37, 59, 73, 89, 103, 131, 151, 167, 179, ...
[ "nonn", "tabf" ]
A162027
[ 818230288201, 1256563983301548, 1591459525493191400, 1.658410504426057e+21, 1.439614891066456e+24, 1.0523826314937088e+27, 6.546605927739414e+29 ]
[ "nonn" ]
A139143
[ 2, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, ...
[ "nonn" ]
A073446
[ 6, 1, 9, 28, 77, 231, 702, 2059, 6157, 18316, 54489, 162185, 482678, 1436397, 4274853, 12722028, 37861085, 112675763, 335326230, 997940307, 2969899037, 8838503884, 26303639349, 78280380217, 232964641030, 693309407681 ]
[ "easy", "nonn" ]
A270878
[ 1, 2, 6, 12, 20, 26, 30, 32, 62, 100, 208 ]
[ "nonn", "hard", "more" ]
A219825
[ 35, 176, 9920, 278027, 7468429, 170199321, 3570274220, 71328310103, 1365703686610, 24903461078829, 431396700960828, 7119029683418332, 112440754850220270, 1706592964512354300, 24961924246898872000 ]
[ "nonn" ]
A115448
[ 1, 2, 29, 58, 1119, 1492, 2238, 20441, 20803, 40882, 41606, 550339, 550687, 552407, 553339, 557239, 568487, 573319, 579367, 581279, 584039, 589399, 593959, 644959, 646303, 653317, 655879, 669599, 676837, 823311, 823527, 826599, 829233, 830199, 8309...
[ "nonn" ]
A062061
[ 2, 4, 70, 516, 174080, 292050, 637320, 687105342, 14342420320, 214517880600 ]
[ "nonn" ]
A029014
[ 1, 1, 2, 2, 3, 4, 5, 6, 7, 9, 11, 13, 15, 17, 20, 23, 26, 29, 33, 37, 42, 46, 51, 56, 62, 68, 74, 81, 88, 96, 104, 112, 121, 130, 140, 150, 161, 172, 184, 196, 209, 222, 236, 250, 265, 281, 297, 314, 331, 349, 368, ...
[ "nonn", "easy" ]
A092490
[ 0, 0, 0, 1, 5, 20, 75, 271, 957, 3337, 11559, 39896, 137423, 472808, 1625632, 5587228, 19198971, 65963978, 226623902, 778551761, 2674604282, 9188106871, 31563807424, 108430368827, 372487292867, 1279591674070, 4395730089428 ]
[ "nonn", "easy" ]
A199518
[ 1, 45, 1260, 15400, 2513869, 174524175, 5866391058, 78538951349, 14918883751196, 1134907763429651, 40321453946092350, 558398606969183170, 113331120839472140000, 8.998123036816557e+21, 3.286152446117272e+23 ]
[ "nonn" ]
A327670
[ 1, 1, 1, 1, 1, 7, 1, 1, 1, 11, 1, 19, 1, 15, 16, 1, 1, 25, 1, 31, 22, 23, 1, 43, 1, 27, 1, 43, 1, 32, 1, 1, 34, 35, 36, 73, 1, 39, 40, 71, 1, 42, 1, 67, 61, 47, 1, 91, 1, 61, 52, 79, 1, 79, 56, 99, 58, ...
[ "nonn" ]
A179667
[ 480, 672, 1056, 1120, 1248, 1632, 1760, 1824, 2080, 2208, 2430, 2464, 2720, 2784, 2912, 2976, 3040, 3402, 3552, 3680, 3808, 3936, 4128, 4256, 4512, 4576, 4640, 4960, 5088, 5152, 5346, 5664, 5856, 5920, 5984, 6318, 6432, 6496, 6560, 6688, ...
[ "nonn" ]
A017045
[ 3125, 248832, 2476099, 11881376, 39135393, 102400000, 229345007, 459165024, 844596301, 1453933568, 2373046875, 3707398432, 5584059449, 8153726976, 11592740743, 16105100000, 21924480357, 29316250624 ]
[ "nonn", "easy" ]
A188265
[ 1, 4, 5, 7, 8, 11, 12, 14, 15, 18, 21, 22, 24, 25, 28, 29, 31, 32, 35, 38, 39, 41, 42, 45, 46, 48, 49, 52, 53, 55, 56, 59, 62, 63, 65, 66, 69, 70, 72, 73, 76, 79, 80, 82, 83, 86, 87, 89, 90, 93, 94, 96, 97, 100...
[ "nonn" ]
A096559
[ 1, 62089911, 847344462, 1061653656, 1954074819, 226824280, 953102500, 1452288378, 50913524, 2133871779, 1843965925, 427233754, 195855103, 1546822229, 1652729917, 1636805220, 217994169, 1312006067, 208869911, 310792805, 675992938, 1109700100, 855351136, 863373758 ]
[ "nonn" ]
A079167
[ 0, 1, 1, 2, 1, 3, 1, 3, 2, 3, 1, 4, 1, 3, 3, 4, 1, 5, 1, 4, 3, 3, 1, 5, 2, 3, 3, 4, 1, 6, 1, 5, 3, 3, 3, 6, 1, 3, 3, 5, 1, 6, 1, 4, 4, 3, 1, 6, 2, 5, 3, 4, 1, 7, 3, 5, 3, 3, 1, 7, 1, 3, 4, 6...
[ "nonn" ]
A306724
[ 2, 14, 3, 170, 3570, 592922491, 17194752239, 498892319051, 14467877252479, 421652049419104, 12227909433154016, 377536703748630300, 926952707565364000000, 1.4858249436365527e+57, 1.8031470774665265e+61, 2.1955912342640015e+65 ]
[ "nonn" ]
A028238
[ 1, 0, 0, 0, 0, 0, 0, 1984, 126, 1984, 0, 0, 0, 0, 0, 0, 1 ]
[ "nonn", "fini", "full" ]
A118892
[ 0, 0, 0, 0, 1, 4, 12, 30, 70, 156, 339, 722, 1515, 3140, 6444, 13116, 26513, 53280, 106530, 212062, 420503, 830964, 1637055, 3216240, 6303099, 12324816, 24049953, 46841550, 91074760, 176796340, 342696000, 663363750, 1282457260, 2476394580 ]
[ "nonn" ]
A346264
[ 1, 2, 2, 3, 1, 2, 4, 2, 4, 2, 3, 4, 2, 1, 6, 4, 4, 4, 5, 2, 3, 6, 2, 6, 4, 2, 4, 2, 2, 8, 1, 3, 8, 4, 6, 2, 8, 2, 2, 6, 4, 4, 4, 6, 9, 2, 4, 7, 8, 2, 8, 2, 4, 6, 1, 6, 4, 3, 2, 2, 10, 3, 2, ...
[ "nonn" ]
A165611
[ 0, 0, 648, 7128, 85536, 870750, 8937054, 89606088, 899190558, 8995054860, 89990100090, 899940633714, 8999883000108, 89999307063540, 899998650010008, 8999992080398088, 89999984700000140, 899999910900869000, 8999999829000001000, 89999999010004960000 ]
[ "base", "nonn" ]
A043656
[ 3006865, 3006866, 3006867, 3006868, 3006869, 3006870, 3006871, 3006872, 3006873, 3006874, 3006875, 3006888, 3006889, 3006891, 3006892, 3006893, 3006894, 3006895, 3006896, 3006897, 3006898, 3006899, 3006900, 3006901 ]
[ "nonn", "base" ]
A205016
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[ "nonn" ]
A002779
[ 0, 1, 4, 9, 121, 484, 676, 10201, 12321, 14641, 40804, 44944, 69696, 94249, 698896, 1002001, 1234321, 4008004, 5221225, 6948496, 100020001, 102030201, 104060401, 121242121, 123454321, 125686521, 400080004, 404090404, 522808225, 617323716, 942060249, 1000...
[ "nonn", "base", "nice", "easy" ]
A326037
[ 1, 2, 4, 6, 8, 16, 32, 42, 64, 100, 128, 256, 512, 798, 1024, 2048, 2744, 4096, 8192, 16384, 32768, 42294, 52900, 65536 ]
[ "nonn", "more" ]
A053257
[ 1, 0, 1, -1, 1, -1, 2, -2, 1, -1, 2, -2, 2, -2, 2, -3, 3, -2, 3, -4, 4, -4, 4, -5, 5, -4, 5, -6, 6, -6, 7, -8, 7, -7, 8, -9, 10, -9, 10, -12, 11, -11, 13, -14, 14, -15, 16, -17, 17, -16, 19, -21, 20, -21, 23,...
[ "sign", "easy" ]
A365390
[ 1, 2, 3, 5, 4, 6, 10, 8, 9, 7, 28, 15, 82, 11, 12, 17, 244, 18, 730, 14, 30, 29, 2188, 24, 13, 83, 27, 20, 6562, 21, 19684, 26, 84, 245, 19, 45, 59050, 731, 246, 23, 177148, 33, 531442, 32, 36, 2189, 1594324, 51, 37, 1...
[ "nonn" ]
A108802
[ 1, 2, 1, 2, 4, 4, 5, 6, 5, 4, 5, 4, 5, 6, 5, 4, 6, 10, 10, 10, 10, 10, 6, 10, 11, 8, 7, 8, 7, 10, 12, 6, 9, 10, 9, 10, 17, 14, 14, 14, 15, 16, 16, 14, 16, 14, 13, 14, 15, 20, 16, 16, 20, 22, 18, 24, 24, ...
[ "nonn", "look" ]
A117458
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[ "easy", "nonn", "base" ]
A157349
[ 1, 3, 9, 9, 1, 6, 9, 1, 1, 8, 2, 9, 6, 6, 9, 2, 0, 4, 0, 2, 7, 9, 4, 1, 2, 2, 1, 7, 9, 5, 8, 2, 1, 8, 7, 5, 2, 1, 0, 9, 3, 8, 6, 7, 8, 8, 3, 4, 7, 4, 4, 6, 5, 0, 8, 8, 1, 1, 4, 3, 8, 5, 1, 3...
[ "cons", "nonn" ]
A030085
[ 5, 11, 101, 499, 733, 887, 991, 1021, 1171, 1193, 1201, 1451, 1601, 1621, 1783, 2111, 2161, 2297, 2311, 2677, 2777, 2927, 3323, 3361, 3373, 3613, 4049, 4663, 4943, 4999, 5003, 5519, 5903, 5953, 6131, 6263, 6449, 6451, 6763, 6883, 7333 ]
[ "nonn", "base" ]
A219291
[ 2, 2, 2, 3, 3, 3, 4, 6, 6, 4, 5, 9, 19, 9, 5, 6, 12, 42, 42, 12, 6, 7, 15, 79, 149, 79, 15, 7, 8, 18, 136, 423, 423, 136, 18, 8, 9, 21, 220, 1092, 1751, 1092, 220, 21, 9, 10, 24, 339, 2623, 6546, 6546, 2623, 339,...
[ "nonn", "tabl" ]
A301637
[ 2, 19, 5.444517870735016e+39 ]
[ "nonn" ]
A191125
[ 1, 2, 5, 7, 11, 14, 20, 23, 31, 32, 41, 47, 59, 68, 83, 92, 95, 122, 127, 131, 140, 167, 176, 191, 203, 239, 248, 275, 284, 335, 365, 371, 380, 383, 392, 419, 491, 500, 511, 527, 563, 572, 608, 671, 707, 716, 743, 767, 8...
[ "nonn" ]
A353635
[ 1, 26, 74, 122, 146, 314, 386, 554, 626, 794, 842, 914, 1082, 1226, 1322, 1346, 1466, 1514, 1754, 1994, 2186, 2306, 2402, 2426, 2474, 2642, 2762, 2906, 3242, 3314, 3506, 3746, 3866, 3986, 4034, 4274, 4682, 4946, 5114, 5186, 5594, 5714...
[ "nonn" ]
A113413
[ 1, 2, 1, 2, 4, 1, 2, 8, 6, 1, 2, 12, 18, 8, 1, 2, 16, 38, 32, 10, 1, 2, 20, 66, 88, 50, 12, 1, 2, 24, 102, 192, 170, 72, 14, 1, 2, 28, 146, 360, 450, 292, 98, 16, 1, 2, 32, 198, 608, 1002, 912, 462, 128, 18, ...
[ "easy", "nonn", "tabl", "look" ]
A178055
[ 3, 1, 3, 2, 3, 2, 3, 3, 2, 3, 2, 3, 3, 0, 3, 2, 3, 2, 3, 3, 2, 3, 2, 3, 3, 0, 3, 2, 3, 2, 3, 3, 2, 3, 2, 3, 3, 0, 3, 2, 3, 2, 3, 3, 2, 3, 2, 3, 3, 1, 3, 2, 3, 2, 3, 3, 2, 3, 2, 3, 3, 0, 3, 2...
[ "easy", "nonn" ]
A005190
[ 1, 1, 4, 12, 44, 155, 580, 2128, 8092, 30276, 116304, 440484, 1703636, 6506786, 25288120, 97181760, 379061020, 1463609356, 5724954544, 22187304112, 86981744944, 338118529539, 1327977811076, 5175023913008, 20356299454276 ]
[ "nonn", "easy" ]
A317279
[ 1, 1, 0, -9, -32, 225, 3456, 2695, -433152, -4495743, 47872000, 1768142871, 6703534080, -597265448351, -11959736205312, 126058380654375, 9454322092343296, 84694164336894460, -5776865438988239000, -192541299662555840000, 1.5119050675617792e+21, 2.4333839192540172e+23, 3.97...
[ "sign" ]
A191009
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[ "nonn" ]
A375447
[ 1, 1, 4, 2, 7, 25, 6, 20, 67, 226, 24, 78, 254, 829, 2713, 120, 384, 1230, 3944, 12661, 40696, 720, 2280, 7224, 22902, 72650, 230611, 732529, 5040, 15840, 49800, 156624, 492774, 1550972, 4883527, 15383110, 40320, 126000, 393840, 1231320, ...
[ "nonn", "tabl" ]
A140848
[ 41, 251, 461, 881, 1091, 1301, 1511, 1721, 1931, 2141, 2351, 3191, 3821, 4241, 4451, 4871, 5081, 5501, 5711, 6131, 6551, 6761, 6971, 8231, 8861, 9281, 9491, 10331, 11171, 11801, 12011, 12641, 13691, 13901, 14321, 14741, 14951, 15161, 15581 ...
[ "nonn" ]
A180878
[ 1, 0, -1, -1, -9, -5, -21, -21, -197, -117, -427, -427, -2501, -1797, -2909, -2909, -72877, -65453 ]
[ "sign" ]
A375349
[ 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1...
[ "nonn", "easy" ]
A277630
[ 1, 5, 2352527, 193841707, 17126009179703, 380211619942943 ]
[ "nonn", "more" ]
A011675
[ 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0...
[ "nonn" ]
A267951
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[ "nonn" ]
A342887
[ 1, 22, 462, 9702, 203302, 4260542, 89253582, 1869809502, 39167457582, 820458452462, 17185914925542, 359989506212182, 7540511273930822, 157947298263243740, 3308420553034902500, 69299392385043270000, 1.4515655830549632e+21, 3.040492959685825e+22 ]
[ "nonn" ]
A081224
[ 5, 1, 13, 2, 22, 3, 31, 35, 4, 44, 5, 52, 6, 61, 65, 7, 74, 8, 83, 9, 91, 96, 1, 104, 11, 113, 12, 121, 126, 13, 134, 14, 143, 15, 152, 156, 16, 165, 17, 173, 18, 182, 19, 191, 195, 2, 204, 21, 212, 22, 221, 225, ...
[ "nonn", "base" ]