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 A187686 #4 Mar 30 2012 18:57:19 %S A187686 2,4,7,9,11,14,16,18,20,23,25,28,30,32,35,36,39,41,44,46,49,51,53,56, %T A187686 57,60,62,64,67,69,72,73,77,78,81,83,86,88,90,93,94,98,99,101,104,106, %U A187686 109,111,113,115,118,120,122,125,127,129,132,135,136,139,141,143,146,148,151,153,155,157,160,162,164,167,169 %N A187686 Complement of A187685. %C A187686 See A187224. %t A187686 (See A187685.) %Y A187686 Cf. A187224, A187685. %K A187686 nonn %O A187686 1,1 %A A187686 _Clark Kimberling_, Mar 12 2011