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 A239764 #10 Jul 18 2014 12:35:15 %S A239764 1,1,10,183,5128,203085,10709136,722183371 %N A239764 Number of pairs of functions (f,g) from a set of n elements into itself satisfying f(f(f(x))) = f(g(x)). %Y A239764 Cf. A181162. %K A239764 nonn,more %O A239764 0,3 %A A239764 _Chad Brewbaker_, Mar 26 2014 %E A239764 a(6)-a(7) from _Giovanni Resta_, Mar 28 2014