id:A015617 - OEIS Search Results

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Number of triples of different integers from [ 1,n ] with no common factors between pairs.

+0
1

0, 0, 1, 2, 7, 8, 19, 25, 37, 42, 73, 79, 124, 138, 159, 183, 262, 277, 378, 405, 454, 491, 640, 668, 794, 850, 959, 1016, 1257, 1285, 1562, 1668, 1805, 1905, 2088, 2150, 2545, 2673, 2866, 2968, 3457, 3522, 4063, 4228, 4431, 4620, 5269, 5385, 5936 (list; graph; listen)

	OFFSET	`1,4`
	CROSSREFS	`Sequence in context: A032689 A101518 A055247 this_sequence A026579 A054601 A117558` `Adjacent sequences: A015614 A015615 A015616 this_sequence A015618 A015619 A015620`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (ogerard(AT)ext.jussieu.fr)`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research