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 A031314 #4 Mar 30 2012 18:56:23 %S A031314 1,6,7,8,10,12,14,17,27,37,47,57,67,77,87,96,98,99,102,105,108,111, %T A031314 112,113,114,115,117,118,120,121,123,124,126,128,129,132,135,138,141, %U A031314 143,144,147,150,153,156,158,159,162,165,168,171 %N A031314 Position of n-th 1 in A031312. %K A031314 nonn %O A031314 1,2 %A A031314 _Clark Kimberling_