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 A104437 #3 May 20 2014 14:52:32 %S A104437 1,105,15,11,10,10,10,10,10,10,10,10,10,10,10 %N A104437 Number of ways to split 1, 2, 3, ..., 4n into 4 arithmetic progressions each with n terms. %Y A104437 Cf. A104429-A104436, A104438-A104443. %K A104437 nonn %O A104437 1,2 %A A104437 _Jonas Wallgren_, Mar 17 2005