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 A176852 #3 Mar 30 2012 18:40:08 %S A176852 7,11,15,17,21,23,27,29,31,35,37,41,43,45,47,49,53,57,59,61,63,67,71, %T A176852 73,75,77,79,83,87,91,93,95,99,101,105,107,109,111,115,117,121,123, %U A176852 125,129,131,133,135,139,141,143,145,147,149,151,153,155,157,159,163,167,169 %N A176852 Complement to A176845. %C A176852 Except first term, a(n) is odd? %K A176852 nonn %O A176852 1,1 %A A176852 _Giovanni Teofilatto_, Apr 27 2010 %E A176852 Corrected (8 replaced by 7) and extended by _R. J. Mathar_, Apr 30 2010