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 A133152 #4 Mar 30 2012 16:50:43 %S A133152 5316,6087,6404,8672,9443,9760,16494,17265,17582,19850,20621,20938, %T A133152 28559,28876,29357,29554,33951,34148,36054,41382,41579,45704,46021, %U A133152 46502,46699,51096,51293,53199,58527,58724,59630,59833,62528,63299 %N A133152 Positions of 11's in A131744. %H A133152 N. J. A. Sloane, <a href="/A133152/b133152.txt">Table of n, a(n) for n = 1..3504</a> %K A133152 nonn %O A133152 1,1 %A A133152 _N. J. A. Sloane_, Sep 22 2007