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 A239766 #9 Jul 18 2014 12:34:48 %S A239766 1,1,10,195,5992,260085,14922576,1087100371 %N A239766 Number of pairs of functions (f,g) from a set of n elements into itself satisfying f(f(x)) = f(g(g(x))). %Y A239766 Cf. A181162. %K A239766 nonn,more %O A239766 0,3 %A A239766 _Chad Brewbaker_, Mar 26 2014 %E A239766 a(6)-a(7) from _Giovanni Resta_, Mar 28 2014