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 A191170 #4 Mar 30 2012 18:57:30 %S A191170 1,2,5,9,14,21,26,37,41,50,57,62,77,85,105,110,114,122,149,165,170, %T A191170 185,229,230,249,254,306,309,314,329,341,365,421,441,446,489,494,509, %U A191170 554,562,597,661,681,686,689,741,746,761,882,917,921,926,941,986,997,1017,1022,1094,1237,1257,1262,1317,1322,1330,1337,1365,1461 %N A191170 Integers in (1+A191123)/3; contains A191123 as a proper subsequence. %C A191170 See A191123. %t A191170 (See A191123.) %Y A191170 Cf. A191123. %K A191170 nonn %O A191170 1,2 %A A191170 _Clark Kimberling_, May 27 2011