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 A118281 #4 Mar 30 2012 17:34:56 %S A118281 0,210,1348,5282,12453,24813,45338,63702,109613,162687,224244,303049, %T A118281 353690,522262,651844,817053 %N A118281 Conjectured number of numbers that are not the sum of three (2n+1)-gonal numbers; bisection of A118279. %Y A118281 Cf. A118278-A118285. %K A118281 nonn %O A118281 1,2 %A A118281 _T. D. Noe_, Apr 21 2006 %E A118281 a(11)-a(16) from _Donovan Johnson_, Apr 17 2010