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 A187227 #4 Mar 30 2012 18:57:19 %S A187227 8,13,18,23,28,33,38,47,52,57,62,71,76,81,86,95,100,105,110,119,124, %T A187227 129,134,143,148,153,158,167,172,177,182,191,196,201,206,211,216,221, %U A187227 226,235,240,245,250,259,264,269,274,283,288,293,298,307,312,317,322,327,332,337,342,351,356,361,366,375,380,385,390,399,404,409,414,423 %N A187227 Complement of A187226. %t A187227 (See A187226.) %K A187227 nonn %O A187227 1,1 %A A187227 _Clark Kimberling_, Mar 07 2011