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 A030256 #8 Mar 30 2012 17:37:00 %S A030256 0,0,0,13,540,232767 %N A030256 Number of nonisomorphic commutative groupoids with a nontrivial symmetry. %H A030256 <a href="/index/Gre#groupoids">Index entries for sequences related to groupoids</a> %Y A030256 A001425 - A030255. %K A030256 nonn,more %O A030256 0,4 %A A030256 _Christian G. Bower_