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 A122234 #2 Mar 31 2012 13:21:11 %S A122234 5,18,62,180,620,1836,5997,23675,76849,263613,923897,3090855 %N A122234 Iterates of A122227, starting from A122227(5)=18. %Y A122234 A122235. %K A122234 nonn %O A122234 1,1 %A A122234 _Antti Karttunen_, Sep 14 2006