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 A088571 #4 Aug 09 2012 06:56:25 %S A088571 0,0,1,1,3,3,6,7,12,14,20,25,36,43,57,69,92,110,140,168,211,250,311, %T A088571 369,453,531,646,754,910,1061,1262,1473,1748,2015,2381,2738,3214,3701, %U A088571 4313,4935,5734,6558,7568,8641,9950,11286,12977,14719,16822,19043,21702 %N A088571 a(n) = A088314(n) - A000009(n). %K A088571 easy,nonn %O A088571 0,5 %A A088571 _Naohiro Nomoto_, Nov 17 2003 %E A088571 Corrected and extended by _Alois P. Heinz_, Aug 09 2012