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 A191158 #4 Mar 30 2012 18:57:30 %S A191158 1,6,11,16,26,46,56,66,76,101,106,136,146,186,196,226,236,266,306,316, %T A191158 406,416,426,506,546,556,586,596,676,686,746,786,796,906,911,916,946, %U A191158 956,1066,1216,1226,1266,1276,1316 %N A191158 Integers in (-2+A191117)/4; contains A191117 as a proper subsequence. %C A191158 See A191117. %t A191158 (See A191117.) %Y A191158 Cf. A191117, A191113. %K A191158 nonn %O A191158 1,2 %A A191158 _Clark Kimberling_, May 27 2011