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 A058106 #6 Mar 30 2012 17:37:11 %S A058106 1,1,3,9,44,271,2246,33672 %N A058106 Number of self-converse asymmetric semigroups of order n. %H A058106 <a href="/index/Se#semigroups">Index entries for sequences related to semigroups</a> %Y A058106 Cf. A029851. %K A058106 nonn,hard %O A058106 0,3 %A A058106 _Christian G. Bower_, Nov 09 2000 %E A058106 Updated Feb 19 2001