This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A290036 #11 Jul 21 2017 16:46:04 %S A290036 135135,6756750,186486300,3765521760,62239847670,893865232260, %T A290036 11567184248620,138167790320560,1549369653596765,16513475306458130, %U A290036 168849390493503720,1668236066705023200,16016472213542100300,150103132298249730600,1378211903535510443400 %N A290036 Number of set partitions of [n] having exactly seven blocks of size > 1. %H A290036 Alois P. Heinz, <a href="/A290036/b290036.txt">Table of n, a(n) for n = 14..1000</a> %H A290036 Wikipedia, <a href="https://en.wikipedia.org/wiki/Partition_of_a_set">Partition of a set</a> %H A290036 <a href="/index/Rec#order_36">Index entries for linear recurrences with constant coefficients</a>, signature (120, -6930, 256564, -6843837, 140161164, -2293167668, 30793317984, -346027498674, 3301174490432, -27034426023228, 191677191769368, -1184495927428914, 6413285791562760, -30547549870770240, 128399094121475760, -477325107218885805, 1571764443755152680, -4588173158058601250, 11875425392771515860, -27240699344951953809, 55318442559624109580, -99273350219483495580, 157041371328829338576, -218253110396224153888, 265336916554318663296, -280638192440433919872, 256449901319079809536, -200704456428999204096, 133025721255740648448, -73584771640934648832, 33313567375875428352, -12012672014150270976, 3315383509586411520, -657169361790566400, 83234996748288000, -5056584744960000). %F A290036 E.g.f.: (exp(x)-x-1)^7/7!*exp(x). %F A290036 G.f.: -(1865750631174144*x^21 -13945050326997504*x^20 +49328717299610112*x^19 -109804126032508544*x^18 +172501534253023360*x^17 -203317256909646880*x^16 +186573768183915112*x^15 -136528527507974140*x^14 +80943939197055550*x^13 -39285221171765415*x^12 +15705856242821360*x^11 -5186986300225730*x^10 +1414798298063150*x^9 -317670047760065*x^8 +58326655226840*x^7 -8663283789160*x^6 +1024105011930*x^5 -94030401465*x^4 +6459332880*x^3 -312161850*x^2 +9459450*x -135135)*x^14 / ((8*x-1) *(7*x-1)^2 *(6*x-1)^3 *(5*x-1)^4 *(4*x-1)^5 *(3*x-1)^6 *(2*x-1)^7 *(x-1)^8). %F A290036 a(0) = a(1) = 0, for n>1 a(n) = 8*a(n-1) + (n-1)*A290035(n-2). - _Ray Chandler_, Jul 21 2017 %Y A290036 Column k=7 of A124324. %Y A290036 Cf. A290035. %K A290036 nonn,easy %O A290036 14,1 %A A290036 _Alois P. Heinz_, Jul 18 2017