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 A190684 #4 Mar 30 2012 18:57:28 %S A190684 11,26,37,41,52,67,82,93,97,108,123,138,149,153,164,179,194,205,220, %T A190684 235,246,250,261,276,291,302,306,317,332,347,358,362,373,388,399,403, %U A190684 414,429,444,455,459,470,485,500,511,515,526,541,556,567,571,582,597,608,612,623,638,653,664,668,679,694,709,720,724,735,750,765 %N A190684 Positions of 0 in A190683. %C A190684 See A190683. %t A190684 (See A190683.) %Y A190684 Cf. A190683. %K A190684 nonn %O A190684 1,1 %A A190684 _Clark Kimberling_, May 17 2011