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 A031095 #4 Mar 30 2012 18:56:20 %S A031095 7,23,41,59,77,95,113,118,120,122,124,126,128,130,131,132,134,149,174, %T A031095 201,228,255,282,309,336,343,346,349,352,355,358,361,363,364,367,390, %U A031095 417,444,471,498,525,552,579,586,589,592,595 %N A031095 Position of n-th 7 in A031087. %K A031095 nonn %O A031095 1,1 %A A031095 _Clark Kimberling_