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 A031079 #4 Mar 30 2012 18:56:20 %S A031079 2,14,27,29,31,32,33,35,37,39,41,43,50,68,86,104,122,140,161,188,208, %T A031079 211,214,215,217,220,223,226,229,232,242,269,296,323,350,377,396,399, %U A031079 402,404,405,408,411,414,417,420,423,426,429 %N A031079 Position of n-th 2 in A031076. %K A031079 nonn %O A031079 1,1 %A A031079 _Clark Kimberling_