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A186990 Number of subsets of {1, 2, ..., n} containing n and having <=6 pairwise coprime elements. 4
1, 2, 4, 4, 12, 4, 28, 16, 32, 12, 116, 16, 242, 48, 72, 110, 664, 63, 1228, 177, 353, 239, 2667, 219, 2155, 599, 1847, 657, 7665, 219, 11613, 3047, 3297, 2209, 4946, 1057, 24328, 3902, 6551, 2564, 40158, 1410, 55194, 8308, 9490 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

CROSSREFS

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

Sequence in context: A286714 A186988 A186989 * A186991 A186992 A186993

Adjacent sequences:  A186987 A186988 A186989 * A186991 A186992 A186993

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Mar 03 2011

STATUS

approved

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Last modified December 8 18:37 EST 2019. Contains 329865 sequences. (Running on oeis4.)