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 A187267 #6 Mar 30 2012 17:37:34
%S A187267 1,3,7,11,23,27,55,71,103,115,231,247,489,537,609,719,1383,1446,2674,
%T A187267 2851,3204,3443,6110,6329,8484,9083,10930,11587,19252,19471,31084,
%U A187267 34131,37428,39637,44583,45640,69968,73870,80421,82985
%N A187267 Number of nonempty subsets of {1, 2, ..., n} with <=6 pairwise coprime elements.
%H A187267 Alois P. Heinz, <a href="/A187267/b187267.txt">Table of n, a(n) for n = 1..200</a>
%F A187267 a(n) = A187262(n,6).
%Y A187267 Column 6 of triangle A187262. First differences are A186990.
%K A187267 nonn
%O A187267 1,2
%A A187267 _Alois P. Heinz_, Mar 07 2011