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 A190854 #4 Mar 30 2012 18:57:29 %S A190854 1,2,4,5,6,8,10,14,16,17,18,20,22,26,28,32,34,40,42,44,50,52,53,56,58, %T A190854 62,64,66,68,70,74,80,82,86,88,90,98,100,104,106,112,114,122,124,128, %U A190854 130,134,136,138,152,158,160,161,162,170,172,176,178,188,194,196,200,202,206,208,210,212,214,224,226,234,242,244,248,250,256 %N A190854 Integers in (-2+A190809)/3; contains A190809 as a proper subsequence. %C A190854 See A190803. %t A190854 (See A190809.) %Y A190854 Cf. A190803, A190909, A190853. %K A190854 nonn %O A190854 1,2 %A A190854 _Clark Kimberling_, May 25 2011