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 A169582 #3 Mar 30 2012 18:51:05 %S A169582 3,6,8,10,15,17,18,19,21,28,30,32,34,36,39,42,45,47,49,50,51,53,55,66, %T A169582 68,69,70,72,74,75,76,78,91,93,95,97,98,99,101,103,105,108,110,111, %U A169582 114,115,117,120,122,124,126,128,130,132,134,136,153,155,156,157,159,161 %N A169582 Complement of A169581. %C A169582 A054521(a(n)) = 0; %C A169582 GCD(A002260(a(n)),A002024(a(n))) = A050873(a(n)) > 1. %H A169582 R. Zumkeller, <a href="/A169582/b169582.txt">Table of n, a(n) for n = 1..1000</a> %K A169582 nonn %O A169582 1,1 %A A169582 _Reinhard Zumkeller_, Dec 02 2009