id:A015622 - OEIS Search Results

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Quadruples of different integers from [ 1,n ] with no global factor.

+0
1

0, 0, 0, 1, 5, 15, 35, 69, 125, 205, 325, 479, 699, 965, 1325, 1745, 2305, 2919, 3735, 4619, 5739, 6949, 8489, 10061, 12081, 14161, 16705, 19343, 22619, 25819, 29879, 33919, 38759, 43655, 49615, 55325, 62465, 69419, 77635, 85771, 95651, 104895 (list; graph; listen)

	OFFSET	`1,5`
	CROSSREFS	`Sequence in context: A063382 A069983 A005894 this_sequence A000750 A008487 A000743` `Adjacent sequences: A015619 A015620 A015621 this_sequence A015623 A015624 A015625`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

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