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Number of subsets of {1, 2, ..., n} containing n and having <=6 pairwise coprime elements.
4

%I #6 Mar 30 2012 17:37:34

%S 1,2,4,4,12,4,28,16,32,12,116,16,242,48,72,110,664,63,1228,177,353,

%T 239,2667,219,2155,599,1847,657,7665,219,11613,3047,3297,2209,4946,

%U 1057,24328,3902,6551,2564,40158,1410,55194,8308,9490

%N Number of subsets of {1, 2, ..., n} containing n and having <=6 pairwise coprime elements.

%H Alois P. Heinz, <a href="/A186990/b186990.txt">Table of n, a(n) for n = 1..200</a>

%Y Column 6 of triangle A186975. Sum of A186989 and A186977.

%K nonn

%O 1,2

%A _Alois P. Heinz_, Mar 03 2011