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 A187229 #4 Mar 30 2012 18:57:19 %S A187229 3,5,9,13,15,17,21,23,26,29,33,37,39,41,45,49,51,55,57,61,63,65,69,71, %T A187229 74,77,81,85,87,89,93,95,98,101,105,107,110,113,117,119,122,125,129, %U A187229 133,135,137,141,145,147,151,153,157,159,161,165,167,170,173,177,181,183,185,189,193,195,199,201,205,207,209,213,217,219 %N A187229 Complement of A187228. %t A187229 (See A187228.) %Y A187229 Cf. A187224, A187228. %K A187229 nonn %O A187229 1,1 %A A187229 _Clark Kimberling_, Mar 07 2011