id:A052128 - OEIS Search Results

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Largest factor of n that is coprime to a larger factor of n.

+0
4

1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 3, 1, 1, 2, 1, 4, 3, 2, 1, 3, 1, 2, 1, 4, 1, 6, 1, 1, 3, 2, 5, 4, 1, 2, 3, 5, 1, 6, 1, 4, 5, 2, 1, 3, 1, 2, 3, 4, 1, 2, 5, 7, 3, 2, 1, 12, 1, 2, 7, 1, 5, 6, 1, 4, 3, 10, 1, 8, 1, 2, 3, 4, 7, 6, 1, 5, 1, 2, 1, 12, 5, 2, 3, 8, 1, 10, 7, 4, 3, 2, 5, 3, 1, 2, 9, 4, 1, 6 (list; graph; listen)

	OFFSET	`1,6`
	COMMENT	`Least k > 0 such that the resultant of the k-th cyclotomic polynomial and the n-th cyclotomic polynomial is not 1. - Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 13 2002`
	EXAMPLE	`a(6) = 6 / 3^1 = 2.`
	CROSSREFS	`n/A034699(n).` `Cf. A054372.` `Adjacent sequences: A052125 A052126 A052127 this_sequence A052129 A052130 A052131` `Sequence in context: A068347 A025865 A085091 this_sequence A114536 A138010 A104306`
	KEYWORD	`nonn`
	AUTHOR	`James A. Sellers (sellersj(AT)math.psu.edu), Jan 21 2000`

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.

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