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 A030248 #8 Mar 30 2012 17:37:00 %S A030248 1,1,1,108,697501 %N A030248 Number of nonisomorphic idempotent groupoids with no symmetry. %H A030248 <a href="/index/Gre#groupoids">Index entries for sequences related to groupoids</a> %K A030248 nonn,more %O A030248 0,4 %A A030248 _Christian G. Bower_