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 A191229 #4 Mar 30 2012 18:57:31 %S A191229 1,2,5,6,14,17,18,22,29,41,50,53,54,65,66,70,86,93,122,149,158,161, %T A191229 162,194,197,198,209,210,214,257,258,262,278,285,342,349,365,446,473, %U A191229 482,485,486,581,590,593,594,626,629,630,641,642,646,770,773,774,785,786,790,833,834,838,854,861,1025,1026,1030,1046,1053,1094 %N A191229 Integers in (1+A191120)/3; contains A191120 as a proper subsequence. %C A191229 See A191120 and A191113. %t A191229 (See A191120.) %Y A191229 Cf. A191113, A191120. %K A191229 nonn %O A191229 1,2 %A A191229 _Clark Kimberling_, May 27 2011