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 A122875 #3 Mar 30 2012 18:49:08 %S A122875 0,1,2,3,4,5,6,7,8,9,11,22,26,264 %N A122875 Numbers whose square is undulating. %C A122875 See A016073, which is the main entry for these numbers. %e A122875 11^2 = 121, 22^2 = 484, 26^2 = 676, 264^2 = 69696. %K A122875 base,fini,full,nonn %O A122875 1,3 %A A122875 _Tanya Khovanova_, Oct 23 2006