id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A259062
[ 1, 4, 42, 728, 17630, 548532, 20852370, 936655792, 48540537702, 2850727359500, 187107038833946, 13572973331551944, 1078343465147156900, 93119965280416890000, 8.684514946963752e+21, 8.699158712659463e+23, 9.314688913454186e+25, 1.0617155946603648e+28 ]
[ "nonn" ]
A371242
[ 1, 3, 4, 5, 6, 12, 8, 1, 10, 18, 12, 20, 14, 24, 24, 1, 18, 30, 20, 30, 32, 36, 24, 4, 26, 42, 1, 40, 30, 72, 32, 1, 48, 54, 48, 50, 38, 60, 56, 6, 42, 96, 44, 60, 60, 72, 48, 4, 50, 78, 72, 70, 54, 3, 72, 8, 80, 90, 60, 120, 62, 96, 80, 1, 84, 144, 68, 90, 96 ]
[ "nonn", "easy", "mult" ]
A155649
[ 1, 16, 156, 1546, 15936, 168826, 1818216, 19767106, 216038496, 2368025386, 25997890776, 285674467666, 3140605159056, 34535772837946, 379828197747336, 4177718354400226, 45952550973479620, 505463955158738500 ]
[ "nonn", "easy" ]
A260872
[ 1, 33, 57, 73, 105, 129, 145, 177, 193, 201, 217, 249, 273, 313, 337, 345, 385, 393, 409, 457, 465, 481, 537, 553, 561, 577, 609, 633, 649, 673, 697, 705, 745, 753, 777, 793, 817, 849, 865, 889, 897, 913, 921, 969, 985, 1009, 1041, 1065, 1081, 1113, 1129 ]
[ "nonn" ]
A139652
[ 233, 241, 257, 281, 313, 353, 401, 457, 521, 593, 673, 761, 857, 929, 937, 953, 977, 1009, 1049, 1097, 1153, 1193, 1217, 1289, 1321, 1553, 1601, 1657, 1753, 1889, 1913, 2017, 2081, 2089, 2113, 2137, 2153, 2297, 2377, 2441, 2609, 2617, 2633 ]
[ "nonn", "easy" ]
A186327
[ 1, 4, 7, 10, 13, 15, 18, 21, 23, 26, 29, 32, 34, 37, 40, 43, 45, 48, 51, 54, 56, 59, 62, 64, 67, 70, 73, 75, 78, 81, 84, 86, 89, 92, 95, 97, 100, 103, 105, 108, 111, 114, 116, 119, 122, 125, 127, 130, 133, 136, 138, 141, 144, 146, 149, 152, 155, 157, 160, 163, 166, 168, 171, 174, 177, 179, 182, 185, 187, 190, 193, 196, 198, 201, 204, 207, 209, 212, 215, 217, 220, 223 ]
[ "nonn" ]
A071114
[ 2, 3, 4, 7, 9, 16, 25, 31, 64, 81, 127, 289, 729, 1681, 2401, 3481, 4096, 5041, 7921, 8191, 10201, 15625, 17161, 27889, 28561, 29929, 65536, 83521, 85849, 131071, 146689, 262144, 279841, 458329, 491401, 524287, 531441, 552049, 579121, 597529 ]
[ "easy", "nonn" ]
A365102
[ 1, 7, 57, 70, 501, 140, 2059, 1029, 4377, 1255, 13311, 1820, 26365, 5150, 27555, 16386, 78609, 10940, 123463, 8190, 37785, 33280, 267675, 28700, 312501, 65915, 354295, 66950, 682893, 35140, 893731, 262145, 732105, 196525, 1031559, 142220, 1823509, 308660 ]
[ "nonn" ]
A221487
[ 0, 256, 1980, 865318, 48514602, 6681667775, 579209730382, 63151886490539, 6122578678693488, 629811753399775200 ]
[ "nonn" ]
A362649
[ 1, 1, 3, 4, 10, 13, 27, 36, 69, 92, 162, 217, 365, 487, 782, 1043, 1622, 2154, 3253, 4306, 6355, 8376, 12107, 15893, 22582, 29512, 41285, 53729, 74164, 96100, 131054, 169110, 228165, 293202, 391752, 501406, 664093, 846642, 1112363, 1412768, 1842620 ]
[ "nonn" ]
A307312
[ 1, 21, 12, 112, 121, 11212, 1112, 12121, 11, 2121, 1121, 21211, 121112, 1212, 111212, 121211, 1212121, 11211, 11121212, 11121112, 12121112, 121212, 12121211, 121212121, 112121, 211, 1211, 111, 212121, 112111, 2121211, 12121212121, 212111, 21212121, 11212121, 1121111, 121212111, 2111, 21212111 ]
[ "base", "nonn" ]
A317730
[ 3, 383, 9541, 293378, 8931649, 270714329, 8216055128, 249314217853, 7565327218559, 229567981552274, 6966174450868233, 211386578804567900, 6414465665292667000, 194645136230595530000, 5.906451304820463e+21 ]
[ "nonn" ]
A009218
[ 1, 1, 0, 1, -2, 6, -14, -20, 876, -12572, 157816, -1953324, 24704560, -323390144, 4399642248, -62212681544, 912281561296, -13817130664560, 214872589110016, -3401627908578992, 54093656991247780, -844240783639323100 ]
[ "sign", "easy" ]
A327257
[ 3, 4, 5, 9, 10, 11, 15, 16, 17, 21, 22, 23, 27, 28, 29, 33, 34, 38, 39, 40, 44, 45, 46, 50, 51, 52, 56, 57, 58, 62, 63, 64, 68, 69, 73, 74, 75, 79, 80, 81, 85, 86, 87, 91, 92, 93, 97, 98, 99, 102, 103, 104, 108, 109, 110, 114, 115, 116, 120, 121, 122 ]
[ "nonn", "easy" ]
A273914
[ 1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 6, 4, 1, 1, 5, 10, 10, 5, 1, 1, 6, 15, 20, 15, 6, 1, 1, 7, 21, 35, 35, 20, 7, 1, 1, 8, 28, 56, 70, 53, 26, 8, 1, 1, 9, 36, 84, 126, 121, 76, 33, 9, 1, 1, 10, 45, 120, 210, 245, 192, 106, 41, 10, 1, 1, 11, 55, 165, 330, 453, 430, 290, 143, 50, 11, 1 ]
[ "nonn", "tabl" ]
A358266
[ 3, 10, 12, 141, 278, 387, 421 ]
[ "nonn", "hard", "more" ]
A037129
[ 0, 1, 3, 9, 33, 107, 333, 1036, 3153, 9583, 29010, 87557, 263679, 793061, 2383280, 7158069, 21490605, 64504548, 193579176, 580868607, 1742867913, 5229128045, 15688432647, 47067395121, 141206379612, 423627527495, 1270899359726, 3812731633623, 11438262009764 ]
[ "nonn" ]
A264586
[ 0, 4, 4, 28, 97, 333, 1380, 4497, 16712, 61820, 220148, 817438, 2928108, 10697750, 38920136, 141054653, 514441936, 1866146690, 6788624488, 24686203092, 89672098757, 326220334103, 1185345202297, 4309679482381, 15667708119546 ]
[ "nonn" ]
A332970
[ 1, 3, 5, 7, 9, 121, 222, 323, 424, 525, 626, 727, 828, 929, 1111, 2112, 3113, 4114, 5115, 6116, 7117, 8118, 9119, 10401, 11211, 12921, 13731, 14541, 15351, 16161, 18881, 19691, 20402, 21212, 22922, 23732, 24542, 25352, 26162, 28882, 29692, 30403, 31213, 32923 ]
[ "nonn", "base" ]
A191002
[ 1, 6, 15, 36, 35, 90, 77, 216, 225, 210, 143, 540, 221, 462, 525, 1296, 323, 1350, 437, 1260, 1155, 858, 667, 3240, 1225, 1326, 3375, 2772, 899, 3150, 1147, 7776, 2145, 1938, 2695, 8100, 1517, 2622, 3315, 7560, 1763, 6930, 2021, 5148, 7875, 4002, 2491, 19440, 5929, 7350, 4845, 7956, 3127, 20250, 5005, 16632, 6555, 5394, 3599, 18900 ]
[ "nonn", "mult" ]
A094195
[ 1, 3, 10, 42, 199, 981, 4888, 24420, 122077, 610359, 3051766, 15258798, 76293955, 381469737, 1907348644, 9536743176, 47683715833, 238418579115, 1192092895522, 5960464477554, 29802322387711, 149011611938493, 745058059692400, 3725290298461932, 18626451492309588 ]
[ "nonn", "easy" ]
A305539
[ 0, 1, 35, 1190, 40426, 1373295, 46651605, 1584781276, 53835911780, 1828836219245, 62126595542551, 2110475412227490, 71694037420192110, 2435486796874304000, 82734857056306150000, 2.8105496531175347e+21, 9.547595334893987e+22, 3.243371864210838e+24 ]
[ "nonn", "easy" ]
A190559
[ 4, 9, 11, 16, 21, 26, 28, 33, 38, 40, 45, 50, 55, 57, 62, 67, 69, 74, 79, 81, 86, 91, 96, 98, 103, 108, 110, 115, 120, 125, 127, 132, 137, 139, 144, 149, 151, 154, 156, 161, 166, 168, 173, 178, 180, 185, 190, 195, 197, 202, 207, 209, 214, 219, 224, 226, 231, 236, 238, 243, 248, 250, 255, 260, 265, 267, 272, 277, 279, 284, 289, 294 ]
[ "nonn" ]
A052638
[ 0, 0, 2, 18, 96, 960, 11520, 161280, 2580480, 46448640, 928972800, 20437401600, 490497638400, 12752938598400, 357082280755200, 10712468422656000, 342798989524992000, 11655165643849728000, 419585963178590200000 ]
[ "easy", "nonn" ]
A118611
[ 0, 77, 132, 245, 392, 585, 728, 1029, 1428, 1725, 2352, 3185, 4292, 5117, 6860, 9177, 10904, 14553, 19404, 25853, 30660, 40817, 54320, 64385, 85652, 113925, 151512, 179529, 238728, 317429, 376092, 500045, 664832, 883905, 1047200, 1392237, 1850940, 2192853 ]
[ "nonn", "easy" ]
A297576
[ 1, 5, 36, 254, 5800, 395011, 38609160, 5752782514, 2136636243308, 1857722960742588, 2730521146982947300, 7.180017772945965e+21 ]
[ "nonn" ]
A286051
[ 2, 3, 6, 8, 10, 11, 14, 16, 18, 19, 22, 24, 26, 28, 29, 32, 34, 35, 38, 40, 42, 43, 46, 48, 50, 51, 54, 56, 57, 60, 62, 64, 66, 67, 70, 72, 74, 75, 78, 80, 82, 83, 86, 88, 90, 92, 93, 96, 98, 99, 102, 104, 106, 108, 109, 112, 114, 116, 117, 120, 122, 124 ]
[ "nonn", "easy" ]
A283733
[ 1, 3, 7, 12, 19, 28, 38, 50, 63, 78, 95, 113, 133, 155, 178, 203, 229, 257, 287, 318, 351, 385, 421, 459, 498, 539, 582, 626, 672, 719, 768, 819, 871, 925, 981, 1038, 1097, 1157, 1219, 1283, 1348, 1415, 1483, 1553, 1625, 1698, 1773, 1850, 1928, 2008, 2089 ]
[ "nonn", "easy" ]
A354943
[ 1, 2, 22, 438, 12824, 496370, 23914512, 1379269094, 92667551104, 7108231236066, 612974464428800, 58702772664490264, 6181602019316334000, 709911177607125100000, 8.830159512943582e+22, 1.1825985945777637e+25, 1.6966961687605205e+27, 2.5962454675886934e+29 ]
[ "nonn" ]
A117372
[ 1, -3, 1, 0, -4, 1, 0, 3, -5, 1, 0, 0, 7, -6, 1, 0, 0, -3, 12, -7, 1, 0, 0, 0, -10, 18, -8, 1, 0, 0, 0, 3, -22, 25, -9, 1, 0, 0, 0, 0, 13, -40, 33, -10, 1, 0, 0, 0, 0, -3, 35, -65, 42, -11, 1, 0, 0, 0, 0, 0, -16, 75, -98, 52, -12, 1 ]
[ "easy", "sign", "tabl" ]
A085375
[ 1, 15, 150, 1225, 8820, 58212, 360360, 2123550, 12033450, 66050270, 353068716, 1845586470, 9464546000, 47738754000, 237329805600, 1164893795820, 5653161067950, 27157342385250, 129275302348500, 610315506350550, 2859764086899720, 13308425945529000 ]
[ "easy", "nonn" ]
A079454
[ 0, 4, 20, 30, 57, 59, 62, 76, 100, 111, 123, 136, 144, 145, 151 ]
[ "nonn", "fini", "full" ]
A275035
[ 16, 432, 1152, 8273, 57984, 421793, 3056856, 22207559, 160767947, 1166126087, 8461160013, 61425788827, 445787882372, 3235147655180, 23477974651336, 170398268043384, 1236726092295065, 8975919178977093, 65144744923024290 ]
[ "nonn" ]
A249915
[ 255465, 652244, 665256, 2534665, 2536656, 2554262, 6523462, 6524235, 6652242, 23352656, 23354365, 23523462, 23546665, 23565325, 25346665, 25425256, 25624665, 25625465, 65226242, 65234535, 235442656, 254234662, 255465525, 255645525, 256246665, 256254665 ]
[ "nonn", "base" ]
A311357
[ 1, 4, 8, 12, 16, 22, 27, 28, 36, 36, 48, 42, 56, 50, 64, 58, 75, 64, 86, 72, 96, 82, 102, 88, 116, 92, 124, 100, 133, 112, 140, 118, 156, 122, 164, 134, 168, 140, 181, 146, 194, 148, 204, 166, 206, 170, 224, 172, 232, 182 ]
[ "nonn" ]
A038246
[ 1, 5, 4, 25, 40, 16, 125, 300, 240, 64, 625, 2000, 2400, 1280, 256, 3125, 12500, 20000, 16000, 6400, 1024, 15625, 75000, 150000, 160000, 96000, 30720, 4096, 78125, 437500, 1050000, 1400000, 1120000, 537600, 143360, 16384, 390625 ]
[ "nonn", "tabl", "easy" ]
A238029
[ 260, 4730, 38612, 793252, 5924312, 126809722, 925685972, 20101505132, 146575894280, 3194747877980, 23456317323896, 510766808846456, 3786696887418320, 82210210212664260, 615846898245378300 ]
[ "nonn" ]
A230459
[ 2, 7, 71, 661, 733, 2371, 3529, 13499, 46549, 98101, 163517, 197933, 1924217, 3322441, 5370731 ]
[ "nonn", "more" ]
A062030
[ 8, 5760, 42577920, 1300252262400, 111644006842368000, 2.169592087486063e+22, 8.291067715225261e+27, 5.644260808699396e+33, 6.360332664265372e+39, 1.1209384544297235e+46, 2.953116925616657e+52 ]
[ "nonn" ]
A126185
[ 0, 0, 0, 3, 29, 198, 1180, 6570, 35196, 184128, 948516, 4835295, 24469005, 123174810, 617662890, 3088403955, 15409111025, 76755126600, 381848749720, 1897825700385, 9425387927295, 46783757341050, 232114595171200 ]
[ "nonn" ]
A234545
[ 7056, 39188, 217304, 1207448, 6716768, 37416120, 208681224, 1165446648, 6516597192, 36485687312, 204519881000, 1147919287576, 6450460720072, 36293012495432, 204433220949360, 1152984059654840, 6510049369565848 ]
[ "nonn" ]
A131578
[ 2, 4, 19, 34, 75, 88, 197, 221, 244, 247, 272, 278, 322, 375, 383, 399, 560, 573, 604, 618, 690, 741, 834, 1135, 1193, 1212, 1228, 1272, 1382, 1401, 1490, 1524, 1585, 1589, 1779, 1989 ]
[ "nonn" ]
A176687
[ 34, 56, 86, 92, 94, 104, 106, 142, 144, 160, 164, 166, 184, 186, 194, 196, 202, 204, 214, 216, 218, 220, 230, 232, 236, 248, 256, 266, 272, 284, 300, 302, 304, 320, 322, 328, 340, 346, 358, 384, 392, 394, 398, 400, 412, 414, 416, 430, 434, 446, 452, 456, 464 ]
[ "nonn" ]
A341912
[ 1, 1, 2, 3, 5, 7, 10, 13, 18, 23, 30, 37, 47, 57, 70, 83, 101, 118, 141, 162, 192, 218, 255, 286, 333, 370, 427, 470, 540, 590, 673, 730, 831, 894, 1014, 1085, 1224, 1305, 1469, 1552, 1747, 1841, 2057, 2163, 2418, 2520, 2818, 2933, 3256, 3388, 3765, 3879, 4319, 4452, 4914, 5068 ]
[ "nonn" ]
A124893
[ 1, 15, 69, 255, 1097, 4765, 21237, 95873, 437537, 2012997, 9321899, 43397633, 202926209, 952396005, 4484003747, 21168581905, 100170213121, 474981809053, 2256307682541, 10735210220803, 51148724456627, 244007372314919 ]
[ "nonn", "base" ]
A375102
[ 1, 11, 2, 3, 4, 44, 448, 4487, 44875, 448751, 4487512, 44875124, 448751248, 4487512487, 44875124875, 448751248751, 4487512487512, 44875124875124, 448751248751248, 4487512487512487, 5, 6, 7, 8, 88, 887, 9, 10, 101, 12, 13, 14, 145, 1451, 15, 16, 167, 17, 18, 19, 20, 202, 2024 ]
[ "nonn" ]
A056204
[ 1, 1, 6, 16, 81, 299, 1358, 5567, 23350, 91998, 351058, 1269907, 4394634, 14495236, 45779246, 138567568, 403282017, 1130773069, 3062535192, 8028046724, 20411824364, 50429813556, 121280243676, 284360432241, 650972702410 ]
[ "nonn" ]
A238138
[ 62, 149, 257, 281, 286, 365, 403, 418, 526, 534, 573, 577, 579, 712, 744, 825, 849, 877, 973, 992, 1016, 1106, 1191, 1243, 1251, 1257, 1286, 1341, 1388, 1440, 1487, 1526, 1636, 1656, 1841, 1844, 1846, 1953, 1966, 2028, 2108, 2120, 2142, 2225, 2272, 2392, 2409 ]
[ "nonn" ]
A136049
[ 2, 1, 1, 1, 1, 0, 2, 0, 2, 0, 2, 1, 2, 2, 1, 1, 1, 1, 1, 2, 0, 1, 2, 2, 1, 0, 1, 3, 1, 0, 3, 2, 1, 1, 4, 0, 3, 1, 2, 3, 1, 2, 2, 2, 5, 1, 3, 1, 1, 1, 4, 2, 1, 1, 2, 3, 4, 4, 2, 2, 2, 4, 4, 5, 2, 3, 2, 3, 2, 3, 1, 1, 5, 3, 2, 2, 2, 3, 2, 2, 6, 4, 1, 2, 3, 4, 1, 3, 1, 3, 3, 2, 3, 4, 2, 5, 2, 3, 5, 3, 4, 2, 2, 4, 2 ]
[ "nonn" ]
A260281
[ 366, 1150, 5420, 18380, 65907, 264502, 984644, 3594132, 13692107, 51665854, 191960166, 721121125, 2715359102, 10162545149, 38093817256, 143095709741, 536645505853, 2012038271487, 7550226421387, 28325095890229, 106233154740268 ]
[ "nonn" ]
A163666
[ 2, 5, 47, 107, 1613, 5653, 21557, 230047, 821603, 8145173, 47073007, 68939141, 76040521, 196388147, 240595631, 433046543, 1085166671, 2269551127, 4670405591, 9784786813, 104484802043, 420065905307, 474962067289, 2616252796471, 5804170333301 ]
[ "nonn" ]
A247627
[ 10, 12, 18, 20, 21, 24, 27, 30, 36, 40, 42, 45, 48, 50, 54, 60, 63, 70, 72, 80, 81, 84, 90, 100, 105, 108, 110, 120, 126, 130, 132, 140, 144, 147, 150, 160, 162, 168, 170, 180, 189, 190, 198, 200, 210, 216, 220, 230, 231, 240, 243, 250, 260, 264, 270, 280, 288, 290, 297, 300, 310, 320, 324, 330, 340, 350, 360, 370, 380, 390, 396, 400 ]
[ "nonn", "base" ]
A204346
[ 30378276, 22275534255, 16256855591536, 11860456910608960, 8653701637919900000, 6.313899655904879e+21, 4.606746353051274e+24, 3.361172935168171e+27, 2.4523780306878485e+30 ]
[ "nonn" ]
A368326
[ 0, 1, 16, 83521, 48663522406470664000, 5.608079543150184e+78 ]
[ "nonn", "easy" ]
A358712
[ 1, 17, 229, 3105, 44930, 674292, 10217420, 154980130, 2350703747, 35658264301, 540957030465, 8206939419403 ]
[ "nonn", "more" ]
A137949
[ 0, 0, -1, -2, 0, 2, 0, 18, 0, -4, 128, 0, -96, 0, 8, 0, -1875, 0, 400, 0, -16, -23328, 0, 15552, 0, -1440, 0, 32, 0, 470596, 0, -96040, 0, 4704, 0, -64, 8388608, 0, -5242880, 0, 491520, 0, -14336, 0, 128, 0, -215233605, 0, 42515280, 0, -2204496, 0, 41472, 0, -256, -5000000000, 0, 3000000000, 0, -280000000 ]
[ "tabf", "uned", "sign" ]
A106343
[ 1, -1, 2, -9, 94, -2220, 114456, -12542341, 2868686486, -1352689963470, 1303841598115220, -2553657953434196000, 1.0119516065845068e+22, -8.08876917414891e+25, 1.301256069443124e+30, -4.206231885776486e+34 ]
[ "sign" ]
A014506
[ 1, 1, 1, 1, 1, 1, 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, 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, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0 ]
[ "sign" ]
A365089
[ 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1 ]
[ "easy", "nonn" ]
A389113
[ 2, 5, 31, 41, 59, 139, 281, 311, 479, 593, 1153, 1283, 1559, 2213, 2963, 3067, 3167, 3181, 5153, 6779, 7451, 9463, 9859, 10061, 10889, 17539, 22229, 30869, 32717, 33851, 35393, 36191, 36599, 48761, 57641, 60223, 62861, 65539, 67723, 76249, 78643, 81083, 85439 ]
[ "nonn" ]
A319447
[ 0, 1, 1, 2, 1, 2, 2, 3, 3, 2, 1, 3, 2, 3, 2, 3, 1, 4, 2, 3, 3, 2, 1, 4, 2, 3, 3, 4, 1, 3, 2, 3, 2, 2, 3, 4, 2, 3, 3, 4, 1, 4, 2, 3, 4, 2, 1, 4, 2, 2, 2, 4, 1, 4, 2, 5, 3, 2, 1, 4, 2, 3, 5, 3, 3, 3, 2, 3, 2, 4, 1, 4, 2, 3, 2, 4, 3, 4, 2, 4, 3, 2, 1, 5, 2, 3, 2 ]
[ "nonn" ]
A245633
[ 1, 1, 2, 6, 28, 164, 1137, 8928, 76875, 710152 ]
[ "nonn" ]
A381697
[ 1, 1587474651, 1865775531, 2223331131, 2735465781, 2758657521, 2955787311, 3437557341, 3558772551, 3575611851, 3825477561, 4339513471, 5216934211, 5228577831, 5773583721, 7358739151, 7547751831, 7733285751, 9553837341, 11745456771, 11765169751, 12646455871 ]
[ "nonn", "base" ]
A379439
[ 1, 2, 4, 1, 14, 6, 52, 40, 4, 248, 320, 76, 1416, 2946, 1395, 82, 9172, 29364, 24950, 4348, 66366, 309558, 427336, 160050, 7258, 518868, 3365108, 6987100, 4696504, 688976, 4301350, 37246245, 109761827, 118353618, 37466297, 1491629, 37230364, 416751008, 1668376886, 2675297588, 1512650776, 195728778 ]
[ "nonn", "tabf" ]
A287477
[ 0, 1, 0, 1, 2, 1, 2, 1, 4, 1, 4, 3, 6, 3, 6, 3, 6, 3, 8, 5, 8, 3, 10, 5, 10, 3, 12, 5, 12, 7, 14, 7, 14, 7, 16, 7, 14, 7, 18, 9, 16, 9, 20, 11, 18, 9, 22, 11, 20, 9, 24, 13, 20, 9, 26, 13, 22, 9, 28, 13, 24, 11, 30, 13, 26, 11, 32, 15, 28, 13, 34, 15, 30, 17, 36, 19, 30, 15, 38, 19, 34, 17, 40, 17, 34, 17 ]
[ "nonn" ]
A212621
[ 0, 2, 10, 10, 28, 28, 36, 36, 60, 60, 60, 80, 80, 80, 110, 112, 80, 158, 112, 146, 146, 110, 158, 222, 182, 158, 294, 196, 146, 266, 110, 320, 182, 146, 238, 414, 222, 222, 266, 370, 158, 354, 196, 238, 472, 294, 266, 594, 312, 424, 238, 354, 320, 744, 280, 494, 370, 266, 146, 660, 414, 182, 624 ]
[ "nonn" ]
A095366
[ 3, 5, 3, 7, 3, 5, 3, 7, 3, 5, 3, 11, 3, 5, 3, 7, 3, 5, 3, 7, 3, 5, 3, 11, 3, 5, 3, 7, 3, 5, 3, 7, 3, 5, 3, 11, 3, 5, 3, 7, 3, 5, 3, 7, 3, 5, 3, 11, 3, 5, 3, 7, 3, 5, 3, 7, 3, 5, 3, 17, 3, 5, 3, 7, 3, 5, 3, 7, 3, 5, 3, 11, 3, 5, 3, 7, 3, 5, 3, 7, 3, 5, 3, 11, 3, 5, 3, 7, 3, 5, 3, 7, 3, 5, 3, 11, 3, 5, 3, 7 ]
[ "nonn" ]
A061903
[ 1, 1, 4, 1, 3, 3, 1, 2, 2, 1, 1, 4, 1, 2, 2, 1, 2, 3, 1, 2, 4, 1, 2, 2, 2, 2, 3, 2, 3, 2, 1, 2, 3, 2, 2, 2, 2, 3, 2, 1, 3, 2, 2, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 3, 2, 2, 2, 2, 2, 2, 1, 2, 3, 3, 3, 2, 2, 3, 2, 2, 2, 2, 2, 3, 3, 2, 3, 3, 2, 2, 2, 2, 3, 3, 2, 2, 3, 3, 3, 3, 1, 3, 3, 3, 3, 2, 2, 3, 3, 2, 1, 4, 1, 2, 2 ]
[ "nonn", "base", "easy" ]
A050722
[ 3, 6, 66, 5995, 15051, 15199896744769898000 ]
[ "nonn", "base", "hard", "changed" ]
A186353
[ 1, 3, 6, 9, 12, 16, 21, 26, 31, 37, 44, 51, 58, 66, 75, 84, 93, 103, 114, 125, 136, 148, 161, 174, 187, 201, 216, 231, 246, 262, 279, 296, 313, 331, 350, 369, 388, 408, 429, 450, 471, 493, 516, 539, 562, 586, 611, 636, 661, 687, 714, 741, 768, 796, 825, 854, 883, 913, 944, 975, 1006, 1038, 1071, 1104, 1137, 1171, 1206, 1241, 1276, 1312, 1349, 1386, 1423, 1461, 1500, 1539, 1578, 1618, 1659, 1700, 1741, 1783, 1826, 1869, 1912, 1956, 2001, 2046, 2091 ]
[ "nonn" ]
A078059
[ 1, -3, 7, -19, 51, -135, 359, -955, 2539, -6751, 17951, -47731, 126915, -337463, 897303, -2385899, 6344027, -16868559, 44852943, -119262499, 317115059, -843198503, 2242037063, -5961502747, 15851439563, -42148455999, 112071357055, -297994049235, 792356367523, -2106849498391 ]
[ "sign", "easy" ]
A055341
[ 1, 3, 8, 19, 37, 66, 110, 172, 257, 371, 518, 705, 939, 1226, 1574, 1992, 2487, 3069, 3748, 4533, 5435, 6466, 7636, 8958, 10445, 12109, 13964, 16025, 18305, 20820, 23586, 26618, 29933, 33549, 37482, 41751, 46375, 51372, 56762, 62566, 68803 ]
[ "nonn" ]
A102574
[ 1, 7, 10, 31, 31, 70, 50, 127, 91, 217, 122, 310, 183, 350, 310, 511, 307, 637, 362, 961, 500, 854, 530, 1270, 781, 1281, 820, 1550, 871, 2170, 962, 2047, 1220, 2149, 1550, 2821, 1407, 2534, 1830, 3937, 1723, 3500, 1850, 3782, 2821, 3710, 2210, 5110, 2451 ]
[ "nonn", "mult", "easy" ]
A167259
[ 0, 0, 0, 1, 0, 1, 0, 3, 3, 0, 0, 0, 10, 0, 0, 1, 0, 23, 23, 0, 1, 0, 9, 56, 0, 56, 9, 0, 0, 0, 132, 0, 0, 132, 0, 0, 1, 0, 259, 1787, 0, 1787, 259, 0, 1, 0, 19, 546, 0, 22889, 22889, 0, 546, 19, 0, 0, 0, 1095, 0, 0, 264500, 0, 0, 1095, 0, 0, 1, 0, 2043, 72105, 0 ]
[ "nonn", "tabl" ]
A325369
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 46, 47, 49, 51, 53, 55, 57, 58, 59, 60, 61, 62, 64, 65, 66, 67, 69, 70, 71, 73, 74, 77, 78, 79, 81, 82, 83, 84, 85, 86 ]
[ "nonn" ]
A150176
[ 1, 2, 6, 20, 77, 295, 1205, 4978, 21019, 89763, 388922, 1697329, 7471691, 33116255, 147601615, 661139219, 2974954453, 13437851384, 60907445442, 276943253976, 1262774428532, 5772438698793, 26449029821837, 121446337474291, 558731084390151, 2575170517482218, 11888688646338116, 54970745292086850 ]
[ "nonn", "walk" ]
A111166
[ 2, 5, 11, 17, 29, 41, 59, 71, 101, 107, 137, 149, 179, 191, 197, 227, 239, 269, 281, 311, 347, 419, 431, 461, 521, 569, 599, 617, 641, 659, 809, 821, 827, 857, 881, 1019, 1031, 1049, 1061, 1091, 1151, 1229, 1277, 1289, 1301, 1319, 1427, 1451, 1481, 1487, 1607 ]
[ "easy", "nonn" ]
A163431
[ 3, 19, 83, 179, 191, 239, 373, 431, 643, 719, 739, 883, 1123, 1151, 1171, 1237, 1283, 1429, 1459, 1669, 1811, 2053, 2083, 2293, 2351, 2437, 2579, 2677, 2687, 2819, 2851, 2879, 3167, 3253, 3491, 3539, 3877, 4051, 4099, 4483, 4549, 4643, 4799, 5087, 5171 ]
[ "nonn", "easy" ]
A169229
[ 1, 24, 552, 12696, 292008, 6716184, 154472232, 3552861336, 81715810728, 1879463646744, 43227663875112, 994236269127576, 22867434189934250, 525950986368487700, 12096872686475217000, 278228071788930000000 ]
[ "nonn" ]
A254339
[ 1, 4, 7, 6, 8, 4, 7, 9, 7, 6, 8, 8, 9, 8, 4, 7, 7, 9, 7, 6, 8, 6, 8, 9, 8, 8, 8, 9, 9, 9, 8, 4, 7, 7, 7, 9, 9, 7, 6, 8, 8, 9, 8, 6, 8, 8, 9, 8, 8, 9, 8, 8, 9, 9, 9, 9, 9, 8, 4, 7, 7, 7, 7, 9, 9, 7, 6, 8, 6, 8, 9, 8, 8, 8, 9, 9, 9, 8, 6, 8, 8, 8, 9, 9, 8, 8 ]
[ "nonn", "base" ]
A216118
[ 0, 1, 1, 10, 15, 5, 90, 165, 90, 15, 840, 1750, 1225, 350, 35, 8400, 19180, 15750, 5950, 1050, 70, 90720, 222264, 204624, 92610, 22050, 2646, 126, 1058400, 2744280, 2757720, 1421490, 411600, 67620, 5880, 210, 13305600, 36162720, 38980920, 22203720, 7408170, 1496880, 180180, 11880, 330 ]
[ "nonn", "tabl" ]
A382087
[ 1, 1, 7, 106, 2525, 82536, 3436867, 174045376, 10385025849, 713599868800, 55498397386751, 4819444051348224, 462246012357060350, 48531686994029300000, 5.536163290789602e+21, 6.818246398394893e+23, 9.016854004425948e+25, 1.2744019609725371e+28 ]
[ "nonn" ]
A187742
[ 1, 1, 4, 14, 66, 384, 2640, 20880, 186480, 1854720, 20321280, 243129600, 3153427200, 44068147200, 660064204800, 10548573235200, 179151388416000, 3222109642752000, 61178237632512000, 1222853377794048000, 25667116186263550000, 564433265896980500000, 1.2977099311614198e+22 ]
[ "nonn" ]
A157997
[ 287, 575, 863, 1151, 1439, 1727, 2015, 2303, 2591, 2879, 3167, 3455, 3743, 4031, 4319, 4607, 4895, 5183, 5471, 5759, 6047, 6335, 6623, 6911, 7199, 7487, 7775, 8063, 8351, 8639, 8927, 9215, 9503, 9791, 10079, 10367, 10655, 10943, 11231, 11519 ]
[ "nonn", "easy" ]
A226373
[ 1, 0, 0, 1, 0, 0, 19, 0, 0, 50, 17, 0, 499, 34, 2, 1932, 901, 4, 14152, 2904, 455, 66283, 37037, 1319, 420837, 158496, 33772, 2165069, 1414662, 133691, 12858197, 7114650, 1842975, 69205389, 52535381, 8951317, 398719444, 288028604, 88120788, 2192096580 ]
[ "nonn", "easy" ]
A063193
[ 1, 11, 13, 17, 19, 22, 39, 46, 95, 100, 202, 716, 1008, 1347, 3544, 4174, 27864, 51834, 81170, 115510, 172502, 1297395, 1428481, 3429593, 8484143, 16796993, 35875141, 202879810, 560789726, 953079326, 1456311045, 2218799342 ]
[ "nonn", "easy" ]
A016782
[ 1, 4096, 117649, 1000000, 4826809, 16777216, 47045881, 113379904, 244140625, 481890304, 887503681, 1544804416, 2565726409, 4096000000, 6321363049, 9474296896, 13841287201, 19770609664, 27680640625, 38068692544, 51520374361, 68719476736, 90458382169, 117649000000 ]
[ "nonn", "easy" ]
A296213
[ 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, 1, 0, 0, 0, 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, 1, 0, 0, 0, 0, 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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 ]
[ "nonn" ]
A291572
[ 1, 2, 3, 4, 5, 6, 7, 8, 8, 10, 10, 6, 10, 7, 8, 8, 10, 6, 10, 10, 7, 10, 10, 6, 10, 10, 8, 7, 10, 6, 10, 8, 8, 10, 7, 6, 10, 10, 8, 8, 10, 6, 10, 10, 8, 10, 10, 6, 7, 10, 8, 10, 10, 6, 10, 7, 8, 10, 10, 6, 10, 10, 7, 8, 10, 6, 10, 10, 8, 7 ]
[ "nonn" ]
A113090
[ 1, 3, 1, 21, 12, 1, 331, 255, 39, 1, 11973, 11326, 2442, 120, 1, 1030091, 1136709, 310864, 22206, 363, 1, 218626341, 272246616, 89081163, 8266954, 199839, 1092, 1, 118038692523, 162043308555, 61099562421, 6923071251, 220482175, 1796349 ]
[ "nonn", "tabl" ]
A145315
[ 1, 43, 3772, 86022, 691263, 1940280, 2445785, 2539018, 3355288, 4492167, 4598112, 5517709, 5731956, 7466941, 8409234, 9817872, 10324700, 10390862, 12138468, 13631232, 17181592, 17382707, 17609073, 20633677, 20897582, 22760333, 23389302, 32968102, 36051016, 37215088 ]
[ "nonn" ]
A350220
[ 33, 91, 148, 246, 451, 496, 505, 561, 657, 703, 1035, 1105, 1912, 2120, 2465, 2556, 2752, 2821, 4005, 4141, 5461, 6525, 6533, 6565, 6601, 6700, 7107, 8695, 8905, 8911, 10585, 11649, 12403, 12801, 13366, 13695, 13833, 14701, 15211, 15841, 17120, 18336, 19345, 19503, 19900 ]
[ "nonn", "base" ]
A012583
[ 1, 0, 0, 0, -12, 60, -210, 1260, -4368, -42336, 833880, -9944880, 109031208, -998835552, 5256888000, 57628902240, -2552409700608, 53611141985664, -880205240332224, 12318269451041664, -115115298914746750 ]
[ "sign" ]
A269560
[ 1, 3, 7, 15, 33, 67, 145 ]
[ "hard", "more", "nonn" ]
A015803
[ 1, 1, 0, -1, -1, 0, 1, 1, 0, -1, -1, 0, 1, 0, -1, -1, 0, 1, 1, 0, -1, -1, 0, 0, 0, 0, 1, 1, 0, -1, -1, 0, 1, 1, 0, -1, 0, 1, 1, 0, -1, -1, 0, 1, 1, 0, 0, 0, 0, -1, -1, 0, 1, 1, 0, -1, -1, 0, 1, 0, -1, -1, 0, 1, 1, 0, -1, -1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
[ "sign" ]
A088079
[ 1, 2, 4, 64, 352, 3531872, 992498752 ]
[ "more", "nonn" ]
A041842
[ 21, 442, 18585, 390727, 16429119, 345402226, 14523322611, 305335177057, 12838600759005, 269915951116162, 11349308547637808, 238605395451510140, 10032775917511064000, 210926899663183870000, 8.868962561771233e+21 ]
[ "nonn", "cofr", "frac", "easy", "less" ]
A166577
[ 1, 4, -5, 10, -20, 40, -80, 160, -320, 640, -1280, 2560, -5120, 10240, -20480, 40960, -81920, 163840, -327680, 655360, -1310720, 2621440, -5242880, 10485760, -20971520, 41943040, -83886080, 167772160, -335544320, 671088640, -1342177280, 2684354560, -5368709120 ]
[ "sign", "easy" ]
A325723
[ 0, 0, 1, 2, 4, 4, 7, 8, 9, 12, 15, 19, 26, 37, 46, 70, 91, 127, 163, 219, 283, 365, 456, 582, 716, 893, 1105, 1336, 1642, 1998, 2432, 2934, 3588, 4284, 5211, 6291, 7599, 9107, 11041, 13177, 15891, 18989, 22790, 27168, 32459, 38535, 45872, 54361, 64362, 76021 ]
[ "nonn", "easy" ]
A360646
[ 1, 2, 3, 4, 6, 7, 5, 12, 14, 9, 8, 15, 28, 18, 13, 10, 24, 35, 36, 26, 19, 11, 30, 56, 45, 52, 38, 21, 16, 33, 70, 72, 65, 76, 42, 27, 17, 48, 77, 90, 104, 95, 84, 54, 29, 20, 51, 112, 99, 130, 152, 105, 108, 58, 37, 22, 60, 119, 144, 143, 190, 168, 135, 116, 74, 39 ]
[ "nonn", "tabl" ]