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 A104439 #3 May 20 2014 14:52:32 %S A104439 1,10395,232,68,59,57,56,56,56,56,56,56,56,56,56 %N A104439 Number of ways to split 1, 2, 3, ..., 6n into 6 arithmetic progressions each with n terms. %Y A104439 Cf. A104429-A104438, A104440-A104443. %K A104439 nonn %O A104439 1,2 %A A104439 _Jonas Wallgren_, Mar 17 2005