id:A160973 - OEIS Search Results

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a(n) is the number of positive integers of the form (n-3k)/(2k+1), 1<=k<= (n-1)/5.

+0
2

0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 2, 0, 1, 0, 0, 3, 0, 1, 1, 0, 2, 1, 0, 0, 3, 2, 0, 1, 0, 0, 3, 2, 0, 2, 0, 2, 1, 0, 1, 1, 2, 0, 3, 0, 0, 5 (list; graph; listen)

	OFFSET	`0,17`
	COMMENT	`If n is different from 3, then a(n)=0 iff n is in A067076, i.e. 2n+3 is prime.`
	CROSSREFS	`Cf. A067076 A034953 A054269 A082749 A006254 A161116` `Sequence in context: A106594 A143251 A115235 this_sequence A036853 A036852 A050327` `Adjacent sequences: A160970 A160971 A160972 this_sequence A160974 A160975 A160976`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Shevelev (shevelev(AT)bgu.ac.il), Jun 01 2009, Jun 07 2009`
	EXTENSIONS	`Edited by N. J. A. Sloane, Jun 07 2009`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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