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 A289953 #8 Jul 23 2017 03:08:25 %S A289953 945,45045,1344420,33093060,745860115,16201119935,348820952480, %T A289953 7567361882080,167057902281270,3775807346835342,87699348621850680, %U A289953 2098002630307972920,51760647309783259386,1317835530989933266850,34632875559239201852608,939407586052413176727424 %N A289953 Number of permutations of [n] having exactly five nontrivial cycles. %C A289953 A nontrivial cycle has size > 1. %H A289953 Alois P. Heinz, <a href="/A289953/b289953.txt">Table of n, a(n) for n = 10..450</a> %H A289953 Wikipedia, <a href="https://en.wikipedia.org/wiki/Permutation">Permutation</a> %F A289953 E.g.f.: (-log(1-x)-x)^5/5!*exp(x). %t A289953 Drop[Range[0, 30]! CoefficientList[Series[(-Log[1 - x] - x)^5 / 5! Exp[x], {x, 0, 30}], x], 10] (* _Vincenzo Librandi_, Jul 23 2017 *) %Y A289953 Column k=5 of A136394. %K A289953 nonn %O A289953 10,1 %A A289953 _Alois P. Heinz_, Jul 16 2017