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 A030264 #8 Mar 30 2012 17:37:00 %S A030264 1,2,51,18330,104124850 %N A030264 Number of nonisomorphic commutative groupoids with 1 idempotent and no symmetry. %H A030264 <a href="/index/Gre#groupoids">Index entries for sequences related to groupoids</a> %K A030264 nonn,more %O A030264 1,2 %A A030264 _Christian G. Bower_