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 A191190 #4 Mar 30 2012 18:57:31 %S A191190 1,2,4,6,7,13,14,19,22,26,40,43,50,54,58,67,71,74,79,86,102,121,130, %T A191190 135,151,158,163,170,175,198,202,214,223,230,238,259,263,266,294,307, %U A191190 314,342,364,391,406,454,455,475,482,490,511,518,526,595,602,607,630,643,650,670,678,691,698,715,778,790 %N A191190 Integers in (-1+A191133)/3; contains A191133 as a proper subsequence. %C A191190 See A191133. %t A191190 (See A191133.) %Y A191190 Cf. A191133, A191113. %K A191190 nonn %O A191190 1,2 %A A191190 _Clark Kimberling_, May 27 2011