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 A191155 #4 Mar 30 2012 18:57:30 %S A191155 1,5,13,21,29,37,53,61,85,109,149,157,181,213,245,253,285,325,341,437, %T A191155 445,469,541,597,629,637,725,733,757,797,853,973,981,1013,1021,1301, %U A191155 1309,1333,1365,1405,1621,1749,1781,1789,1821,1877,1885,1909,2165,2173,2197,2269,2333,2389 %N A191155 Integers in (2+A191116)/3; contains A191116 as a proper subsequence. %C A191155 See A191113 and A191116. %t A191155 (See A191116.) %Y A191155 Cf. A191116, A191113. %K A191155 nonn %O A191155 1,2 %A A191155 _Clark Kimberling_, May 27 2011