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 A092296 #4 Feb 22 2013 14:39:01 %S A092296 1,5,6,11,12,16,18,22,26,29,30,34,36,40,44,46,50,51,54,58,62,64,68,69, %T A092296 74,75,79,83,84,88,90,94,98,100,104,105,108,112,116,118,122,123,128, %U A092296 129,133,136,140,141,146,147,151 %N A092296 a(n) = 3*n + A090193(n). %C A092296 This sequence has asymptotic density 1/3. %K A092296 easy,nonn %O A092296 0,2 %A A092296 _Philippe Deléham_, Feb 05 2004