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 A054066 #4 Mar 30 2012 18:57:01 %S A054066 1,3,5,9,14,19,26,33,42,52,62,74,87,100,115,130,147,165,183,203,223, %T A054066 245,268,291,316,342,368,396,424,454,485,516,549,583,617,653,689,727, %U A054066 766,805,846,887,930,974,1018,1064,1111,1158,1207 %N A054066 Position of n-th 1 in A054065. %K A054066 nonn %O A054066 1,2 %A A054066 _Clark Kimberling_