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 A191186 #4 Mar 30 2012 18:57:31 %S A191186 1,3,5,7,9,13,15,21,27,29,31,37,39,45,53,61,63,81,85,87,93,109,111, %T A191186 117,125,127,135,149,157,159,181,183,189,213,243,245,253,255,261,279, %U A191186 325,327,333,341,349,351,373,375,381,405,437,445,447,469,471,477,501,509,511,541,543,549,567,597,629,637,639,725,729,733,735,757 %N A191186 Integers in (A191131)/3; contains A191131 as a proper subsequence. %C A191186 See A191131. %t A191186 (See A191131.) %Y A191186 Cf. A191131, A191113. %K A191186 nonn %O A191186 1,2 %A A191186 _Clark Kimberling_, May 27 2011