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 A191208 #4 Mar 30 2012 18:57:31 %S A191208 1,4,5,6,14,16,17,18,20,22,26,44,50,53,56,58,62,64,66,68,70,74,80,82, %T A191208 90,106,134,152,161,170,176,178,188,194,200,202,206,212,214,224,226, %U A191208 234,242,248,250,256,258,266,272,274,282,298,320,322,330,362,404,426,458,485,512,530,536,538,566,584,602,608,610,620,638,644,646 %N A191208 Integers in (-2+A191142)/3; contains A191142 as a proper subsequence. %C A191208 See A191142. %t A191208 (See A191142.) %Y A191208 Cf. A191142, A191113. %K A191208 nonn %O A191208 1,2 %A A191208 _Clark Kimberling_, May 28 2011