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 A030590 #4 Mar 30 2012 18:56:19 %S A030590 1,4,5,6,8,11,17,23,29,34,36,37,40,43,44,45,46,47,49,50,52,54,55,58, %T A030590 61,63,64,67,70,72,73,76,79,81,82,85,90,98,99,101,104,108,117,126,135, %U A030590 144,152,153,155,158,162,171,180,189,198,206,207 %N A030590 Position of n-th 1 in A030588. %K A030590 nonn %O A030590 1,2 %A A030590 _Clark Kimberling_