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 A191176 #4 Mar 30 2012 18:57:30 %S A191176 2,4,6,7,9,11,13,14,16,18,21,23,25,28,30,32,35,37,39,40,42,44,46,47, %T A191176 49,51,53,54,56,58,61,63,65,68,70,72,75,77,79,80,82,84,86,87,89,91,93, %U A191176 94,96,98,101,103,105,108,110,112,113,115,117,119,120,122,124,126,127,129,131,134,136,138,141,143,145,148,150,152,153,155 %N A191176 Positions of 1 in A191156; complement of A191160. %C A191176 See A191156. %t A191176 (See A191156.) %Y A191176 Cf. A191156, A191160. %K A191176 nonn %O A191176 1,1 %A A191176 _Clark Kimberling_, May 27 2011