A186991 Number of subsets of {1, 2, ..., n} containing n and having <=7 pairwise coprime elements.

1, 2, 4, 4, 12, 4, 28, 16, 32, 12, 116, 16, 248, 48, 72, 112, 720, 64, 1447, 190, 380, 254, 3444, 247, 2795, 701, 2410, 784, 11588, 247, 19472, 4839, 4802, 3175, 7300, 1449, 45641, 6191, 10520, 3908, 82986, 2124, 124554, 15874, 17608

Offset

1,2

Links

Alois P. Heinz, Table of n, a(n) for n = 1..200

Crossrefs

Column 7 of triangle A186975. Sum of A186990 and A186978.

Sequence in context: A186988 A186989 A186990 * A186992 A186993 A186973

Adjacent sequences: A186988 A186989 A186990 * A186992 A186993 A186994

Keyword

nonn

Author

Alois P. Heinz, Mar 03 2011

Status

approved