id:A099475 - OEIS Search Results

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Number of divisors d of n such that d+2 is also a divisor of n.

+0
4

0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 3, 0, 0, 2, 1, 0, 1, 0, 1, 1, 0, 0, 4, 0, 0, 1, 1, 0, 2, 0, 1, 1, 0, 1, 3, 0, 0, 1, 2, 0, 1, 0, 1, 2, 0, 0, 4, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 5, 0, 0, 2, 1, 0, 1, 0, 1, 1, 1, 0, 4, 0, 0, 2, 1, 0, 1, 0, 2, 1, 0, 0, 4, 0, 0, 1, 1, 0, 2, 0, 1, 1, 0, 0, 4, 0, 0, 2, 1, 0, 1, 0, 1, 3 (list; graph; listen)

	OFFSET	`1,12`
	COMMENT	`0 <= a(n) <= a(m*n) for all m>0;` `a(A099477(n)) = 0; a(A059267(n)) > 0;` `a(A099476(n)) = n and a(m) <> n for m < A099476(n).` `For n>0: a(A008585(n))>0, a(A008586(n))>0, and a(A008588(n))>0.`
	CROSSREFS	`Adjacent sequences: A099472 A099473 A099474 this_sequence A099476 A099477 A099478` `Sequence in context: A096936 A115979 A067168 this_sequence A120569 A128113 A108930`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 18 2004`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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