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 A191191 #4 Mar 30 2012 18:57:31 %S A191191 1,2,4,6,7,13,14,15,19,22,26,33,40,43,50,51,54,58,60,67,74,79,86,102, %T A191191 114,121,123,130,132,151,158,163,168,170,175,195,198,202,214,223,230, %U A191191 231,238,259,266,294,307,314,342,357,364,384,391,406,447,454,456,475,482,483,490,511,518,519,526,537,595,600,602,607,630,643 %N A191191 Integers in (2+A191133)/4; contains A191133 as a proper subsequence. %C A191191 See A191133. %t A191191 (See A191133.) %Y A191191 Cf. A191133, A191113. %K A191191 nonn %O A191191 1,2 %A A191191 _Clark Kimberling_, May 27 2011