

A186979


Number of ordered octuples of distinct pairwise coprime positive integers with largest element n.


4



8, 0, 65, 2, 4, 2, 339, 8, 291, 31, 264, 42, 2576, 8, 6527, 1436, 967, 610, 1518, 232, 21395, 1793, 3123, 1002, 50310, 540, 93852, 8394, 8646, 9696, 187722, 6072, 141942, 13860, 44814, 25542, 472593, 15444, 126012, 33198, 96078, 60294, 959714
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OFFSET

17,1


LINKS

Alois P. Heinz, Table of n, a(n) for n = 17..200


EXAMPLE

a(20) = 2 because there are 2 ordered octuples of distinct pairwise coprime positive integers with largest element 20: (1,3,7,11,13,17,19,20), (1,7,9,11,13,17,19,20).


CROSSREFS

Column 8 of triangle A186972. First differences of A186984.
Sequence in context: A137528 A270006 A167318 * A067817 A079137 A181689
Adjacent sequences: A186976 A186977 A186978 * A186980 A186981 A186982


KEYWORD

nonn


AUTHOR

Alois P. Heinz, Mar 02 2011


STATUS

approved



