A187271 Number of nonempty subsets of {1, 2, ..., n} with <=10 pairwise coprime elements.

1, 3, 7, 11, 23, 27, 55, 71, 103, 115, 231, 247, 495, 543, 615, 727, 1455, 1519, 3039, 3231, 3615, 3871, 7743, 7999, 11167, 11903, 14655, 15487, 30951, 31207, 62147, 69503, 75765, 79855, 89440, 91230, 180285, 189556, 205432

Offset

1,2

Links

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

Formula

a(n) = A187262(n,10).

Crossrefs

Column 10 of triangle A187262.

Sequence in context: A187268 A187269 A187270 * A187106 A111668 A112038

Adjacent sequences: A187268 A187269 A187270 * A187272 A187273 A187274

Keyword

nonn

Author

Alois P. Heinz, Mar 07 2011

Status

approved