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 A031082 #4 Mar 30 2012 18:56:20 %S A031082 5,20,38,56,74,81,83,85,87,89,91,92,93,95,97,110,128,146,170,197,224, %T A031082 251,278,289,292,295,298,301,304,305,307,310,313,332,359,386,413,440, %U A031082 467,494,521,532,535,538,541,544,547,548,550 %N A031082 Position of n-th 5 in A031076. %K A031082 nonn %O A031082 1,1 %A A031082 _Clark Kimberling_