A186980 Number of ordered 9-tuples of distinct pairwise coprime positive integers with largest element n.

8, 0, 0, 0, 81, 1, 74, 4, 70, 6, 1056, 1, 3640, 793, 398, 247, 621, 89, 14930, 956, 1662, 513, 42243, 285, 93093, 6831, 6765, 7785, 213681, 5511, 162549, 13299, 44517, 25245, 633633, 16731, 145215, 36003, 108885, 67779, 1437252, 9867, 2406404

Offset: 19

Author

Alois P. Heinz, Mar 02 2011

Keywords

• nonn

Examples

			a(24) = 1 because there is one ordered 9-tuple of distinct pairwise coprime positive integers with largest element 24: (1,5,7,11,13,17,19,23,24).
		

Links

• Alois P. Heinz, Table of n, a(n) for n = 19..200

Crossrefs

Column 9 of triangle A186972. First differences of A186985.