id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A029308
[ 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 2, 1, 1, 3, 2, 2, 3, 3, 3, 3, 4, 5, 4, 5, 6, 5, 6, 7, 7, 8, 8, 9, 10, 9, 11, 12, 11, 13, 14, 14, 15, 16, 17, 18, 18, 20, 21, 21, 23, 24, 25, 26, 27, 29, 30, 31, 33, 34...
[ "nonn", "easy" ]
A320923
[ 4, 12, 27, 36, 40, 81, 90, 108, 112, 120, 225, 243, 252, 270, 300, 324, 336, 352, 360, 400, 567, 625, 630, 675, 729, 750, 756, 792, 810, 832, 840, 900, 972, 1000, 1008, 1056, 1080, 1120, 1200, 1323, 1575, 1701, 1750, 1764, 1782,...
[ "nonn" ]
A345288
[ 1, 0, 9, 6, 9, 8, 3, 1, 1, 9, 1, 1, 4, 3, 5, 7, 1, 5, 0, 9, 2, 5, 1, 4, 8, 0, 4, 9, 3, 7, 5, 0, 9, 6, 6, 6, 4, 9, 3, 6, 2, 1, 1, 6, 7, 6, 0, 5, 4, 3, 6, 7, 2, 8, 7, 7, 6, 5, 4, 3, 4, 5, 2, 9...
[ "nonn", "cons" ]
A351112
[ 1, 2, 2, 2, 1, 4, 1, 2, 2, 2, 1, 5, 1, 3, 3, 2, 1, 4, 1, 2, 2, 2, 1, 5, 1, 2, 2, 3, 1, 6, 1, 2, 2, 2, 2, 5, 1, 2, 2, 2, 1, 6, 1, 2, 3, 2, 1, 5, 1, 2, 2, 2, 1, 4, 1, 4, 2, 2, 1, 7, 1, 2, 2, 2...
[ "nonn" ]
A240991
[ 6, 18, 28, 117, 162, 196, 496, 775, 1458, 8128, 9604, 13122, 15376, 19773, 24025, 88723, 118098, 257049, 470596, 744775, 796797, 1032256, 1062882, 2896363, 6725201, 9565938, 12326221, 14776336, 23059204, 25774633, 27237961, 33550336, 43441281, 634551...
[ "nonn" ]
A067526
[ 3, 4, 5, 7, 9, 15, 21, 45, 75, 105 ]
[ "nonn", "hard", "more" ]
A146561
[ 1.0344827586206897e+27, 1.379310344827586e+27, 1.7241379310344829e+27, 2.0689655172413793e+27, 2.4137931034482758e+27, 2.758620689655172e+27, 3.1034482758620687e+27, 1.0344827586206897e+55 ]
[ "nonn", "base", "easy" ]
A239740
[ 1, 1, 2, 1, 6, 20, 3, 18, 8, 143, 8, 8, 21, 986, 84, 63, 220, 6764, 55, 770, 144, 46367, 144, 432, 377, 317810, 16588, 377, 43428, 2178308, 987, 53298, 2584, 14930351, 2584, 18088, 6765, 102334154, 784740, 20295, 2054476, 701408732, ...
[ "nonn" ]
A132661
[ 27, 823543, 1.7069174130723237e+46 ]
[ "nonn" ]
A230519
[ 0, 12, 1408, 1787448, 19885757988, 1844551938024312, 1.4512158748406257e+21, 9.67466628903719e+27 ]
[ "nonn" ]
A388387
[ 9, 5, 3, 1, 3, 2, 2, 0, 3, 7, 0, 5, 2, 1, 8, 8, 5, 7, 7, 3, 2, 7, 1, 5, 8, 6, 1, 6, 1, 1, 0, 8, 7, 7, 7, 7, 3, 0, 8, 2, 8, 1, 9, 5, 9, 2, 5, 1, 4, 2, 9, 3, 2, 1, 8, 0, 2, 5, 6, 2, 8, 3, 6, 1...
[ "nonn", "cons" ]
A008577
[ 1, 4, 9, 17, 28, 41, 57, 76, 97, 121, 148, 177, 209, 244, 281, 321, 364, 409, 457, 508, 561, 617, 676, 737, 801, 868, 937, 1009, 1084, 1161, 1241, 1324, 1409, 1497, 1588, 1681, 1777, 1876, 1977, 2081, 2188, 2297, 2409, 2524, 264...
[ "nonn", "easy", "nice" ]
A367711
[ 2, 4, 6, 5, 10, 7, 14, 3, 9, 8, 12, 21, 15, 16, 18, 20, 24, 27, 30, 22, 13, 26, 25, 28, 11, 33, 32, 34, 19, 38, 35, 36, 40, 44, 39, 42, 45, 55, 46, 50, 48, 66, 52, 17, 51, 54, 77, 56, 65, 57, 58, 31, 62, 60, ...
[ "nonn" ]
A103446
[ 0, 1, 3, 8, 21, 54, 137, 344, 856, 2113, 5179, 12614, 30548, 73595, 176455, 421215, 1001388, 2371678, 5597245, 13166069, 30873728, 72185937, 168313391, 391428622, 908058205, 2101629502, 4853215947, 11183551059, 25718677187, 59030344851, 135237134812 ]
[ "nonn" ]
A313171
[ 1, 4, 9, 15, 18, 22, 29, 33, 40, 38, 48, 51, 61, 58, 66, 67, 81, 78, 84, 84, 101, 95, 110, 98, 121, 111, 134, 110, 142, 129, 153, 134, 158, 147, 173, 156, 170, 164, 195, 173, 198, 174, 217, 191, 226, 180, 236, 209, 247, ...
[ "nonn" ]
A073892
[ 1, 3, -1, 2, -4, 1, -7, 0, -9, 2, -8, 5, -7, 10, -4, 15, 0, 23, 7, 36, 18, 49, 29, 66, 45, 86, 64, 107, 83, 130, 105, 158, 132, 191, 164, 225, 197, 264, 234, 305, 273, 346, 313, 392, 358, 441, 406, 495, 459, 556, 518...
[ "sign" ]
A288199
[ 1, 4, -3, 16, -18, 3, 64, -96, 16, 18, -1, 256, -480, 80, 180, -30, -5, 1024, -2304, 384, 1296, -288, -108, -24, 9, 12, 4096, -10752, 1792, 8064, -2016, -1512, 112, 252, -112, 84, -7 ]
[ "sign", "tabf", "more" ]
A042700
[ 29, 30, 59, 89, 5221, 5310, 10531, 15841, 929309, 945150, 1874459, 2819609, 165411781, 168231390, 333643171, 501874561, 29442367709, 29944242270, 59386609979, 89330852249, 5240576040421, 5329906892670 ]
[ "nonn", "cofr", "frac", "easy" ]
A098368
[ 25, 35, 35, 35, 49, 35, 10, 49, 49, 10, 5, 14, 49, 14, 5, 25, 7, 14, 14, 7, 25, 30, 35, 7, 4, 7, 35, 30, 30, 42, 35, 2, 2, 35, 42, 30, 20, 42, 42, 10, 1, 10, 42, 42, 20, 45, 28, 42, 12, 5, 5, 12, 42, 28, 45, ...
[ "nonn", "tabl", "base" ]
A330581
[ 2, 3, 10, 1001, 1004006004002, 1.0201911448656234e+60 ]
[ "nonn" ]
A219208
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 1, 6, 1, 1, 1, 2, 1, 4, 1, 1, 1, 1, 1, 7, 1, 1, 1, 4, 1, 3, 1, 1, 1, 1, 1, 10, 1, 1, 1, 1, 1, 4, 1, 3, 1, 1, 1, 26, 1, 1, ...
[ "nonn" ]
A008911
[ 0, 0, 2, 12, 40, 100, 210, 392, 672, 1080, 1650, 2420, 3432, 4732, 6370, 8400, 10880, 13872, 17442, 21660, 26600, 32340, 38962, 46552, 55200, 65000, 76050, 88452, 102312, 117740, 134850, 153760, 174592, 197472, 222530, 249900, 279720, 312132 ...
[ "nonn", "easy" ]
A208529
[ 2, 2, 4, 12, 48, 240, 1440, 10080, 80640, 725760, 7257600, 79833600, 958003200, 12454041600, 174356582400, 2615348736000, 41845579776000, 711374856192000, 12804747411456000, 243290200817664000, 4865804016353280000, 102181884343418880000 ]
[ "nonn", "base", "easy" ]
A126843
[ 1, 145, 83, 49, 98, 36, 156, 149, 94, 14, 65, 11, 73, 143, 22, 7, 82, 110, 55, 70, 104, 130, 37, 30, 2, 107, 165, 39, 92, 148, 90, 63, 156, 60, 78, 43, 120, 32, 144, 68, 149, 39, 76, 143, 86, 126, 66, 74, 128, 121, 4...
[ "nonn" ]
A079492
[ 1, 2, 4, 6, 9, 12, 17, 23, 31, 41, 52, 66, 82, 101, 124, 150, 180, 215, 254, 299, 351, 408, 473, 546, 628, 719, 820, 932, 1055, 1192, 1342, 1508, 1689, 1887, 2104, 2340, 2597, 2876, 3179, 3507, 3863, 4247, 4662, 5108, 5590, 61...
[ "nonn" ]
A264358
[ 1, 6, 169, 7168, 831744, 353333680, 450847788304, 1591640798421348 ]
[ "nonn" ]
A138691
[ 72, 77, 93, 117, 189, 237, 357, 429, 597, 909, 1029, 1437, 1749, 1917, 2277, 2877, 3549, 3789, 4557, 5109, 5397, 6309, 6957, 7989, 9477, 10269, 10677, 11517, 11949, 12837, 16197, 17229, 18837, 19389, 22269, 22869, 24717, 26637, 27957, 299...
[ "nonn" ]
A189080
[ 3, 4, 5, 6, 7, 8, 9, 11, 12, 15, 16, 21, 22, 29, 31, 34, 41, 43, 44, 47, 48, 57, 58, 60, 61, 62, 64, 66, 67, 68, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 92, 93, 94, 95, 96, 102, 109, 110, 112, 113, 114, 115, 118,...
[ "nonn" ]
A371672
[ 0, 1, 2, 2, 3, 3, 4, 4, 4, 4, 4, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8...
[ "nonn" ]
A086773
[ 2, 9, 1, 2, 9, 9, 5, 6, 2, 3, 2, 3, 6, 9, 0, 0, 0, 5, 7, 3, 8, 8, 1, 6, 9, 8, 6, 9, 5, 6, 3, 0, 8, 0, 8, 2, 7, 0, 5, 5, 6, 4, 7, 0, 6, 4, 4, 5, 1, 3, 8, 5, 9, 8, 5, 3, 5, 2, 0, 7, 6, 2, 9, 6...
[ "easy", "nonn", "cons" ]
A366789
[ 1, 1, 1, 1, 3, 1, 1, 1, 1, 3, 5, 1, 3, 1, 3, 1, 7, 1, 1, 3, 1, 5, 9, 1, 9, 3, 1, 1, 5, 3, 11, 1, 5, 7, 3, 1, 3, 1, 3, 3, 13, 1, 7, 5, 3, 9, 15, 1, 1, 9, 7, 3, 1, 1, 15, 1, 1, 5, 17, 3, 9, 11, ...
[ "nonn", "mult" ]
A074776
[ 4, 8, 10, 11, 12, 16, 18, 20, 22, 24, 28, 30, 32, 33, 36, 40, 44, 48, 50, 52, 54, 55, 56, 58, 60, 64, 66, 68, 70, 72, 76, 77, 78, 80, 84, 88, 90, 92, 96, 99, 100, 104, 108, 110, 112, 116, 120, 121, 124, 126, 128, 1...
[ "nonn" ]
A070963
[ 2, 1, 2, 0, 4, -2, 0, 2, 6, -4, 6, -4, -6, 10, 2, -2, 12, -10, -2, 8, 2, -4, 8, 4, -16, 8, 10, -8, 10, -8, -8, 14, 14, -26, 26, -14, -36, 42, 20, -22, 68, -66, -60, 14, -10, 60, 40, -74, -38, -66, 10, 134, 44, ...
[ "sign" ]
A287524
[ 0, 1, 2, 1, 0, 2, 2, 0, 1, 1, 0, 2, 0, 1, 2, 2, 0, 1, 2, 0, 1, 0, 1, 2, 1, 0, 2, 1, 0, 2, 0, 1, 2, 2, 0, 1, 0, 1, 2, 1, 0, 2, 2, 0, 1, 2, 0, 1, 0, 1, 2, 1, 0, 2, 2, 0, 1, 0, 1, 2, 1, 0, 2, 0...
[ "nonn", "easy" ]
A353232
[ 0, 2, 6, 13, 26, 51, 98, 182, 324, 552, 902, 1419, 2158, 3185, 4578, 6428, 8840, 11934, 15846, 20729, 26754, 34111, 43010, 53682, 66380, 81380, 98982, 119511, 143318, 170781, 202306, 238328, 279312, 325754, 378182, 437157, 503274, 577163, 6...
[ "nonn", "easy" ]
A367476
[ 0, 2, 3, 2, 5, 5, 7, 2, 3, 7, 1, 5, 3, 9, 8, 2, 7, 5, 9, 7, 10, 3, 3, 5, 5, 5, 3, 9, 9, 10, 1, 2, 4, 9, 12, 5, 7, 11, 6, 7, 1, 12, 3, 3, 8, 5, 7, 5, 7, 7, 10, 5, 3, 5, 6, 9, 12, 11, 9, 10, 1, 3,...
[ "nonn", "base", "easy" ]
A081825
[ 1, 6, 6, 0, 5, 3, 9, 0, 6 ]
[ "cons", "nonn" ]
A347029
[ 1, 5, 24, 112, 536, 2576, 12392, 59610, 286752, 1379411, 6635624, 31920520, 153552936, 738662923, 3553321281, 17093171649, 82226315586, 395547831245, 1902773895293, 9153250784395, 44031505860633, 211812562992414, 1018919543279305, 4901489415968643, 23578503968558228 ]
[ "nonn" ]
A110993
[ 1, 0, 0, 6, 0, 3, 1, 7, 5, 0, 0, 2, 1, 7, 0, 1, 6, 9, 8, 1, 5, 8, 8, 4, 7, 8, 4, 8, 3, 1, 8, 7, 7, 2, 5, 2, 0, 0, 5, 5, 0, 1, 4, 8, 9, 9, 4, 0, 0, 9, 0, 3, 0, 7, 3, 2, 6, 2, 0, 3, 1, 4, 6, 2...
[ "easy", "nonn", "cons" ]
A305285
[ 3, 313, 895, 8431, 41446, 301533, 1847322, 12314089, 80678010, 526137481, 3481542013, 22776996398, 150218677027, 986628682316, 6493406925686, 42707158770594, 280923646529256, 1848097254303284, 12156318968086178 ]
[ "nonn" ]
A057700
[ 2, 4, 6, 12, 8, 10, 18, 16, 24, 14, 22, 20, 30, 28, 26, 52, 32, 36, 34, 38, 46, 42, 40, 64, 44, 50, 54, 48, 56, 58, 66, 68, 60, 62, 100, 78, 72, 94, 76, 84, 96, 82, 74, 108, 70, 90, 80, 92, 86, 112, 144, 132, 88,...
[ "easy", "nonn" ]
A355397
[ 1, 2, 9, 51, 350, 2799, 25373, 255854, 2831177, 34023919, 440414146, 6099346455, 89873849705, 1402403637418, 23081230257449, 399284248276827, 7238080522101270, 137125745341692860, 2708536196071195000, 55660194042713100000, 1.187724805063462e+21 ]
[ "nonn" ]
A300342
[ 1, 1, 1, 1, 5, 1, 1, 13, 13, 1, 1, 42, 47, 42, 1, 1, 127, 255, 255, 127, 1, 1, 389, 1272, 2648, 1272, 389, 1, 1, 1192, 6780, 25327, 25327, 6780, 1192, 1, 1, 3645, 36498, 258608, 476507, 258608, 36498, 3645, 1, 1, 11161, 19...
[ "nonn", "tabl" ]
A104895
[ 0, -1, -2, 1, -4, 3, 2, -3, -8, 7, 6, -7, 4, -5, -6, 5, -16, 15, 14, -15, 12, -13, -14, 13, 8, -9, -10, 9, -12, 11, 10, -11, -32, 31, 30, -31, 28, -29, -30, 29, 24, -25, -26, 25, -28, 27, 26, -27, 16, -17, -18, 17,...
[ "sign", "look", "nice" ]
A131864
[ 8, 9, 12, 13, 24, 25, 28, 29, 72, 73, 76, 77, 88, 89, 92, 93, 128, 129, 132, 133, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 148, 149, 152, 153, 154, 155, 156, 157, 158, 159, 168, 169, 172, 173, 184, 185, 188, 189, ...
[ "nonn" ]
A026605
[ 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2...
[ "nonn" ]
A379348
[ 1, 3, 4, 6, 5, 8, 10, 10, 10, 14, 20, 22, 30, 30, 37, 42, 43, 48, 49, 64, 80 ]
[ "nonn", "more" ]
A109690
[ 1, 1, 234256, 33362176, 4640470641, 5035553952016, 4396167663616, 4777933277779216, 3588188855118838000, 999395939249909800, 1.0194140810541096e+46, 3.2990778537111112e+35 ]
[ "base", "more", "nonn", "changed" ]
A257624
[ 1, 5, 5, 25, 80, 25, 125, 915, 915, 125, 625, 9070, 20130, 9070, 625, 3125, 83185, 348410, 348410, 83185, 3125, 15625, 727980, 5246655, 9755480, 5246655, 727980, 15625, 78125, 6183215, 72272805, 225769855, 225769855, 72272805, 6183215, 78125 ]
[ "nonn", "tabl" ]
A103811
[ 887, 683, 563, 811, 179, 227, 281, 449, 911, 113, 137, 521, 223, 353, 317, 179, 607, 263, 443, 433, 389, 659, 593, 829, 563, 383, 661, 613, 131, 199, 829, 269, 631, 313, 443, 149, 587, 701, 887, 547, 461, 569, 953, 449, 241, 4...
[ "nonn", "base" ]
A095238
[ 1, 2, 0, 12, 0, 18, 35, 32, 9, 90, 11, 72, 117, 98, 30, 240, 34, 162, 247, 200, 63, 462, 69, 288, 425, 338, 108, 756, 116, 450, 651, 512, 165, 1122, 175, 648, 925, 722, 234, 1560, 246, 882, 1247, 968, 315, 2070, 329, 1152,...
[ "nonn" ]
A143662
[ 0, 0, 0, 0, 0, 0, 1, 3, 8, 20, 48, 112, 256, 575, 1275, 2798, 6088, 13152, 28240, 60320, 128257, 271623, 573216, 1205880, 2529680, 5293264, 11050496, 23021311, 47868151, 99357390, 205897508, 426042552, 880346272, 1816750912, 3744698241, 770996378...
[ "nonn" ]
A115829
[ 0, 3, 6, 12, 24, 48, 96, 192, 195, 384, 387, 390, 768, 771, 774, 780, 1536, 1539, 1542, 1548, 1560, 2979, 3072, 3075, 3078, 3084, 3096, 3120, 5958, 6144, 6147, 6150, 6156, 6168, 6192, 6240, 11916, 11939, 12288, 12291, 12294, 12300, ...
[ "nonn" ]
A080918
[ 1, 2, 2, 4, 2, 0, 4, 0, 2, 6, 0, 4, 4, 0, 0, 0, 2, 4, 6, 4, 0, 0, 4, 0, 4, 2, 0, 8, 0, 0, 0, 0, 4, 12, 8, 8, 10, 0, 12, 0, 4, 16, 0, 12, 12, 0, 0, 0, 8, 10, 14, 16, 0, 0, 16, 0, 8, 12, 0, 20, 0, ...
[ "nonn" ]
A363181
[ 1, 0, 2, 2, 8, 14, 54, 128, 498, 1426, 5736, 18814, 78886, 287296, 1258018, 4986402, 22789000, 96966318, 461790998, 2088374592, 10343408786, 49343711666, 253644381032, 1268995609502, 6756470362374, 35285321738624, 194220286045506, 1054759508543554 ]
[ "nonn" ]
A169259
[ 1, 6, 30, 150, 750, 3750, 18750, 93750, 468750, 2343750, 11718750, 58593750, 292968750, 1464843750, 7324218750, 36621093750, 183105468750, 915527343750, 4577636718750, 22888183593750, 114440917968750, 572204589843750 ]
[ "nonn" ]
A125319
[ 1, 9, 51, 249, 1387, 7879, 45663, 267367, 1575395, 9316455, 55211811, 327600447, 1945195699, 11554693471, 68652279747, 407952680479, 2424365629955, 14408066169471, 85629681584835, 508919764066431, 3024669695471107 ]
[ "nonn", "base" ]
A143781
[ 1, 0, -1, -1, 3, 118, -1.9906813403478516e+92 ]
[ "sign", "less" ]
A075721
[ 2, 3, 4, 5, 8, 14, 26, 92, 356, 1412, 5636, 185559, 556671, 21152738, 42305474, 2919075981, 14595379885, 102167659153, 3882371047054, 361060507372953, 16969843846526628, 1561225633880447500, 6244902535521790000 ]
[ "nonn" ]
A210804
[ 1, 2, 2, 5, 8, 3, 14, 27, 18, 5, 41, 88, 79, 40, 8, 122, 284, 310, 215, 80, 13, 365, 912, 1152, 980, 510, 156, 21, 1094, 2917, 4144, 4091, 2660, 1150, 294, 34, 3281, 9296, 14578, 16176, 12393, 6752, 2461, 544, 55, 9842, 2952...
[ "nonn", "tabl" ]
A128819
[ 13, 21, 29, 31, 40, 43, 51, 53, 57, 65 ]
[ "nonn" ]
A234178
[ 388, 3908, 39098, 392664, 3949718, 39781838, 401094098, 4047234624, 40864744240, 412820019378, 4172049278156, 42177344818466, 426502759233778, 4313746963897986, 43637479774212180, 441491561412113340 ]
[ "nonn" ]
A019375
[ 2, 11, 19, 23, 53, 61, 67, 89, 101, 103, 107, 109, 137, 149, 151, 167, 193, 223, 227, 241, 257, 271, 281, 293, 337, 347, 353, 389, 397, 419, 431, 461, 479, 503, 509, 541, 557, 569, 593, 631, 673, 683, 701, 709, 719, 727, 739...
[ "nonn" ]
A376993
[ 4, 3, 13, 13, 513, 801, 6781, 30721, 40513, 1057513, 515313, 16728501, 78402181, 13617661, 472012281, 64846161, 5481873013, 2459693601, 116852093013, 62611784481, 1234170737761, 1565435686113, 17492477581161, 2254878102513, 16836143444113, 229959946206301 ]
[ "nonn", "base" ]
A260420
[ 2, 3, 23, 14927, 31049, 69107, 246263, 5860169, 307164671, 881198663, 1489455647, 2386555631, 8225563703, 14311679063, 111494234183, 154357775303, 299004519623, 870455062823, 970388922263, 991817878343, 1677028870823, 1782783762503, 1830446935223 ]
[ "nonn" ]
A120132
[ 4, 5, 5, 12, 13, 13, 14, 10, 15, 17, 13, 15, 17, 20, 13, 17, 24, 25, 25, 25, 25, 21, 25, 17, 25, 29, 29, 34, 29, 20, 26, 30, 35, 37, 25, 28, 34, 35, 29, 37, 39, 28, 40, 40, 41, 29, 37, 39, 40, 25, 35, 41, 41, 3...
[ "nonn" ]
A142216
[ 19, 101, 347, 593, 757, 839, 1249, 1741, 1823, 1987, 2069, 2971, 3217, 3299, 3463, 3709, 4201, 4283, 4447, 5021, 5431, 5923, 6661, 6907, 7481, 7727, 8219, 8629, 9203, 9613, 9859, 9941, 10433, 10597, 11171, 11827, 11909, 12073, 12401, 1264...
[ "nonn", "easy" ]
A279408
[ 1, 1, 1, 1, 1, 1, 2, 2, 2, 3, 2, 2, 2, 4, 4, 2, 2, 2, 4, 4, 4, 3, 3, 3, 5, 5, 6, 7, 3, 3, 3, 6, 6, 6, 8, 8, 3, 3, 3, 6, 6, 6, 9, 9, 9, 4, 4, 4, 7, 7, 8, 10, 11, 12, 14, 4, 4, 4, 8, 8, 8, 11, 1...
[ "nonn", "tabl", "easy" ]
A320823
[ 1, 55, 1706, 39381, 754514, 12703792, 194550591, 2771831836, 37320172644, 480276118242, 5957871478583, 71707499618340, 841619253647975, 9671546736478640, 109173363429796290, 1213748225365119000, 13319241381691394000, 144529657166520840000 ]
[ "nonn" ]
A020238
[ 91, 133, 145, 247, 1649, 1729, 2821, 8911, 9073, 10585, 13051, 13333, 16471, 19517, 20737, 21361, 24013, 24727, 26467, 29539, 31483, 31621, 34219, 34861, 35881, 38311, 38503, 40321, 53083, 67861, 79381, 79501, 88831, 97351, 115231, 121301, 1319...
[ "nonn" ]
A216687
[ 11, 13, 19, 21, 25, 31, 37, 41, 43, 49, 51, 55, 61, 71, 73, 81, 85, 91, 101, 103, 109, 111, 113, 115, 121, 127, 133, 141, 145, 151, 153, 157, 163, 181, 191, 193, 199, 201, 205, 211, 217, 221, 223, 225, 229, 231, 235, 241, ...
[ "nonn", "base", "easy" ]
A015606
[ 0, 1, 11, 131, 1551, 18371, 217591, 2577211, 30525231, 361549651, 4282298471, 50720779691, 600751561311, 7115474971331, 84277740297751, 998209892988571, 11823086225851792, 140036047414255410, 1658627383815327500, 19645261696111157000 ]
[ "nonn", "easy" ]
A295288
[ 1, 5, 19, 62, 184, 512, 1360, 3488, 8704, 21248, 50944, 120320, 280576, 647168, 1478656, 3350528, 7536640, 16842752, 37421056, 82706432, 181927936, 398458880, 869269504, 1889533952, 4093640704, 8841592832, 19042140160, 40902852608 ]
[ "nonn", "easy" ]
A019254
[ 1, 0, 4, 8, 4, 16, 30, 60, 192, 428, 966, 2580, 6310, 15270, 38844, 97906, 245106, 622140, 1579962, 4022616, 10300520, 26418034, 67838366, 174898580, 452444030, 1173634490, 3053711460, 7968610458, 20842301982 ]
[ "nonn", "more" ]
A362953
[ 0, 34, 352, 540, 1167, 1942, 2176, 3312, 4093, 5454, 8019, 9380, 12025, 12130, 13068, 13158, 15344, 15991, 16279, 16675, 21149, 22699, 22789, 30988, 32257, 32365, 35238, 37883, 37955, 41866, 45549, 54523, 57906, 58530, 62579, 72588, 83692, 83...
[ "nonn", "base" ]
A183355
[ 12, 144, 432, 1296, 3888, 11664, 34992, 104976, 314928, 944784, 2834352, 8503056, 25509168, 76527504, 229582512, 688747536, 2066242608, 6198727824, 18596183472, 55788550416, 167365651248, 502096953744, 1506290861232, 4518872583696 ]
[ "nonn" ]
A373998
[ 1, 2, 3, 5, 4, 9, 25, 8, 21, 55, 16, 7, 11, 6, 35, 121, 12, 49, 65, 18, 77, 13, 10, 27, 91, 20, 33, 119, 26, 15, 17, 14, 39, 85, 22, 57, 115, 28, 19, 23, 24, 95, 143, 32, 45, 133, 34, 69, 125, 38, 51, 145, 44, ...
[ "nonn" ]
A000566
[ 0, 1, 7, 18, 34, 55, 81, 112, 148, 189, 235, 286, 342, 403, 469, 540, 616, 697, 783, 874, 970, 1071, 1177, 1288, 1404, 1525, 1651, 1782, 1918, 2059, 2205, 2356, 2512, 2673, 2839, 3010, 3186, 3367, 3553, 3744, 3940, 4141, 4347, 455...
[ "nonn", "easy", "nice", "changed" ]
A129299
[ 1, 2, 5, 8, 16, 24, 32, 48, 64, 80, 96, 112, 128, 144, 160, 192, 224, 256, 288, 320, 352, 384, 416, 472, 528, 584, 640, 696, 752, 808, 864, 952, 1040, 1128, 1216, 1304, 1392, 1480, 1568, 1656, 1744, 1832, 1920, 2008, 2096, 218...
[ "nonn" ]
A223163
[ 139, 3886, 540154, 43640576, 6578580741, 713054874385, 107232700247240, 12938444501010386, 1917660834712754000 ]
[ "nonn" ]
A020578
[ 3, 5, 11, 13, 17, 29, 37, 41, 89 ]
[ "nonn", "fini", "full" ]
A133261
[ 3, 7, 13, 19, 23, 31, 37, 43, 47, 53, 61, 67, 73, 83, 89, 97, 103, 109, 113, 131, 139, 151, 157, 167, 173, 181, 193, 199, 211, 223, 229, 233, 241, 251, 257, 263, 271, 277, 283, 293, 307, 313, 317, 337, 349, 353, 359, 367, ...
[ "nonn" ]
A260208
[ 2, 3, 2, 107, 271, 3, 3, 523, 17, 191, 73, 2707, 587, 2017, 19, 233, 57193, 7583, 9791, 7, 2111, 1373, 43, 109, 1283, 463, 8179, 25583, 7489, 1733, 9011, 7753, 7853, 887, 10141, 71, 1373, 7927, 509, 1433, 4513, 2399, 4211, 26407, ...
[ "nonn" ]
A206507
[ 3399, 93405, 2105607, 41873838, 769739571, 13397007426, 224125465767, 3639506017737, 57759037910145, 900227925756975, 13830131604178528, 210015057307677950, 3159110458844182500, 47153204170712650000 ]
[ "nonn" ]
A259588
[ 1, 2, 4, 7, 11, 39, 71, 110, 536, 1001, 1537, 9545, 18089, 27634, 208524, 398959, 607483, 5394991, 10391023, 15786014, 161260336, 312129649, 473389985, 5467464369, 10622799089, 16090263458, 207300647060, 403978495031, 611279142091, 8690849042711 ]
[ "nonn", "easy", "frac" ]
A094315
[ 1, 0, 1, 0, 0, 2, 0, 0, 0, 6, 1, 0, 6, 8, 9, 2, 15, 20, 40, 30, 13, 20, 72, 180, 176, 180, 72, 20, 144, 609, 1106, 1421, 980, 595, 154, 31, 1265, 4960, 9292, 10352, 8326, 4096, 1676, 304, 49 ]
[ "nonn", "tabl", "more" ]
A067960
[ 1, 9, 34, 961, 25531, 2722500, 464483559, 224546142769, 215560806324388, 509113406167679900, 2.5906188170132786e+21, 3.073762814964167e+25, 8.097243361544151e+29, 4.875469037335565e+34 ]
[ "nonn", "hard", "nice" ]
A039428
[ 56, 65, 156, 165, 256, 265, 356, 365, 456, 465, 506, 516, 526, 536, 546, 560, 561, 562, 563, 564, 567, 568, 569, 576, 586, 596, 605, 615, 625, 635, 645, 650, 651, 652, 653, 654, 657, 658, 659, 675, 685, 695, 756, 765, 856, 865...
[ "nonn", "base", "easy" ]
A282216
[ 1, 2, 3, 12, 5, 58, 13, 246, 31, 998, 47, 4050, 103, 16296, 251, 65318, 345, 261880, 851, 1047982, 1755, 4193148, 4053, 16773738, 5781, 67103662, 13947, 268425932, 32637, 1073713538, 47037, 4294925438, 111443, 17179792372, 258381, 68719253150, ...
[ "nonn", "easy" ]
A076715
[ 0, 6, 210, 7140, 242556, 8239770, 279909630, 9508687656, 323015470680 ]
[ "dead" ]
A183861
[ 1, 2, 5, 8, 12, 17, 22, 28, 35, 42, 50, 59, 68, 78, 89, 100, 112, 125, 138, 152, 167, 182, 198, 215, 232, 250, 269, 288, 308, 329, 350, 372, 395, 418, 442, 467, 492, 518, 545, 572, 600, 629, 658, 688, 719, 750, 782, 815, ...
[ "nonn", "easy" ]
A143430
[ 7, 7, 43, 13, 43, 97, 43, 67, 193, 157, 31, 211, 61, 523, 73, 241, 13, 19, 97, 67, 13, 67, 157, 283, 193, 79, 157, 67, 151, 211, 67, 13, 7, 739, 109, 7, 151, 157, 73, 109, 61, 97, 223, 79, 157, 373, 109, 211, 193, 163,...
[ "nonn" ]
A204894
[ 3, 5, 5, 7, 7, 11, 17, 11, 11, 13, 13, 17, 29, 17, 17, 19, 19, 23, 41, 23, 23, 29, 53, 29, 53, 29, 29, 31, 31, 37, 67, 37, 71, 37, 37, 41, 79, 41, 41, 43, 43, 47, 89, 47, 47, 53, 97, 53, 101, 53, 53, 59, 109, 5...
[ "nonn" ]
A136188
[ 3, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5, 8, 5...
[ "easy", "base", "nonn" ]
A223530
[ 1, 1, 5, 6, 60, 25, 66, 990, 825, 125, 1056, 21120, 26400, 8000, 625, 22176, 554400, 924000, 420000, 65625, 3125, 576576, 17297280, 36036000, 21840000, 5118750, 487500, 15625, 17873856, 625584960, 1563962400, 1184820000, 370256250, 52893750, 339062...
[ "nonn", "tabl" ]
A269074
[ 72, 1204, 27042, 542112, 10778640, 210476400, 4064720816, 77785162880, 1477636398784, 27897108860960, 523921783242624, 9794822341611072, 182387895832407680, 3384281324193062000, 62600172035227165000 ]
[ "nonn" ]
A184731
[ 1, 2, 6, 38, 490, 14152, 969444, 140621476, 46041241698, 36363843928316, 62022250535177416, 236043875222171120000, 2.205302277098969e+24, 4.572875499501368e+28, 2.070631745797419e+33 ]
[ "nonn" ]
A293548
[ 1, 0, 1, 1, 2, 2, 5, 4, 8, 9, 15, 16, 28, 29, 46, 54, 77, 90, 131, 150, 211, 251, 337, 401, 540, 637, 839, 1006, 1296, 1551, 1995, 2373, 3013, 3610, 4523, 5410, 6754, 8045, 9965, 11897, 14614, 17410, 21313, 25316, 30816, 36615...
[ "nonn" ]
A333162
[ 1, 2, 4, 6, 11, 16, 38, 78, 304, 1672, 19630, 450154, 20198620, 1673850034, 252574719718, 69216356716672, 34559361669877530, 31561018687380680000, 5.295847244202729e+22, 1.639014112167054e+26, 9.395233299284551e+29 ]
[ "nonn" ]
A181661
[ 1, 2, 2, 6, 5, 3, 23, 17, 7, 4, 95, 68, 24, 10, 5, 400, 284, 95, 35, 13, 6, 1692, 1199, 396, 141, 46, 15, 7, 7165, 5075, 1671, 590, 186, 53, 18, 8, 30349, 21494, 7072, 2492, 778, 214, 64, 20, 9, 128558, 91046, 29951, 105...
[ "nonn", "tabl" ]