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 A225969 #9 Aug 05 2015 17:02:13 %S A225969 1,29,493,6484,73713,768931,7641778,74285193,720732077,7097087844, %T A225969 71988257273,762506830931,8539944840752,102230338451871, %U A225969 1318698786618219,18414090830686692,278579895011969895,4555101560023980405,80136465741614450118,1508615434533451340535 %N A225969 Number of permutations of [n] having exactly 8 strong fixed blocks. %C A225969 See A186373 for the definition of strong fixed blocks. %H A225969 Alois P. Heinz, <a href="/A225969/b225969.txt">Table of n, a(n) for n = 22..460</a> %F A225969 a(n) ~ 7 * n! / n^20. - _Vaclav Kotesovec_, Aug 29 2014 %Y A225969 Column k=8 of A186373. %K A225969 nonn %O A225969 22,2 %A A225969 _Alois P. Heinz_, May 22 2013