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 A002244 #11 Jun 11 2014 17:22:16 %S A002244 1,2,3,4,5,6,7,8,9,11,12,13,15,16,18,20,21,23,27,29,33,36,38,48,51,78, %T A002244 111,183 %N A002244 Numbers that are not the sum of 3 distinct nonzero triangular numbers. %Y A002244 Cf. A000217, A002243. %K A002244 fini,full,nonn %O A002244 1,2 %A A002244 _N. J. A. Sloane_, _Dan Hoey_