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 A232101 #4 Dec 05 2013 08:32:23 %S A232101 1,3,1,5,1,35,5,208,8073,36120,1133197,456667,13535367,2592766, %T A232101 3409144,24103053951,1417826703,486682892638 %N A232101 a(n) = A000217(A232097(n)) / n!. %F A232101 a(n) = A000217(A232097(n)) / A000142(n). %o A232101 (Scheme) %o A232101 (define (A232101 n) (/ (A000217 (A232097 n)) (A000142 n))) %K A232101 nonn %O A232101 1,2 %A A232101 _Antti Karttunen_, Nov 25 2013