id:A060990 - OEIS Search Results

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Number of solutions of x-d(x)=n. If x-d(x) is never equal to n, then n is in A045765.

+0
1

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

	OFFSET	`0,1`
	EXAMPLE	`a(11)=3 because three numbers satisfy equation x-d(x)=11, namely {13,15,16} with {2,4,5} divisors respectively.`
	CROSSREFS	`A000005, A049820, A045765, A049816.` `Sequence in context: A106498 A093466 A125761 this_sequence A154950 A158464 A056926` `Adjacent sequences: A060987 A060988 A060989 this_sequence A060991 A060992 A060993`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), May 11 2001`

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

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