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 A235327 #17 Jul 18 2014 09:18:16 %S A235327 1,1,6,69,1144,25045,708336,24564211,1020980640,49909891257 %N A235327 Number of ordered pairs of endofunctions f, g on a set of n elements satisfying f(f(x)) = g(g(x)). %Y A235327 Cf. A000949, A060905. %K A235327 nonn,more %O A235327 0,3 %A A235327 _Chad Brewbaker_, Mar 26 2014 %E A235327 a(6)-a(7) from _Giovanni Resta_, Mar 26 2014 %E A235327 a(8)-a(9) from _Giovanni Resta_, Mar 28 2014