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 A089878 #6 Mar 31 2012 14:02:17 %S A089878 1,1,2,3,6,6,24,72,144,147,588,672,2136,10152,11496,29484,117936, %T A089878 270576,656352,2062368,3184728 %N A089878 Maximum cycle size in range [A014137(n-1)..A014138(n-1)] of permutation A071667/A071668. %H A089878 A. Karttunen, <a href="/A089408/a089408.c.txt">C-program for computing the initial terms of this sequence</a> %Y A089878 For the terms a(0)-a(20) differs from A057545 only at n=14 where a(14)=11496 != A057545(14)=11520 and at n=20, where a(20)=3184728 while A057545(20)=4040160. %K A089878 nonn %O A089878 0,3 %A A089878 _Antti Karttunen_, Nov 29 2003