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 A187575 #4 Mar 30 2012 18:57:19 %S A187575 2,4,7,8,11,13,16,18,20,22,24,27,29,32,33,36,38,40,43,44,47,49,52,53, %T A187575 56,58,60,63,65,68,69,72,74,76,78,81,83,85,88,89,92,94,97,99,101,103, %U A187575 105,108,110,113,114,117,119,121,123,126,128,130,133,134,137,139,141,144,146,148,150 %N A187575 Complement of A187574. %t A187575 (See A187574.) %Y A187575 Cf. A187224, A187575. %K A187575 nonn %O A187575 1,1 %A A187575 _Clark Kimberling_, Mar 11 2011