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 A187418 #4 Mar 30 2012 18:57:19 %S A187418 2,4,7,8,11,12,16,17,19,22,25,27,29,30,32,35,38,40,41,44,46,48,50,52, %T A187418 55,57,60,62,65,66,68,70,72,75,77,79,82,85,87,89,90,93,95,98,100,102, %U A187418 104,106,108,111,113,115,117,119,121,124,126,128,130,133,134,137 %N A187418 Complement of A187417. %C A187418 See A187224. %t A187418 (See A187417.) %Y A187418 Cf. A187224, A187417. %K A187418 nonn %O A187418 1,1 %A A187418 _Clark Kimberling_, Mar 09 2011