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 A187477 #5 Mar 30 2012 18:57:19 %S A187477 3,4,7,9,11,14,16,18,20,22,25,27,29,31,33,36,38,40,43,44,47,49,51,53, %T A187477 56,58,60,62,65,67,69,71,73,76,78,80,82,84,87,89,91,93,95,98,100,102, %U A187477 105,106,109,111,113,116,118,120,122,124,127,128,131,133,135,138 %N A187477 Complement of A187476. %C A187477 See A187224. %t A187477 (See A187476.) %Y A187477 Cf. A187224, A187476. %K A187477 nonn %O A187477 1,1 %A A187477 _Clark Kimberling_, Mar 10 2011