id:A049234 - OEIS Search Results

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Number of divisors of p_k + 2, where p_k is k-th prime.

+0
6

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

	OFFSET	`1,1`
	FORMULA	`DivisorSigma[ 0, Prime[ n ]+2 ]`
	EXAMPLE	`10th term is a(10)=d[ p(10)+2 ]=d[ 29+2 ]=d[ 29 ]=2`
	CROSSREFS	`Adjacent sequences: A049231 A049232 A049233 this_sequence A049235 A049236 A049237` `Sequence in context: A052901 A127807 A122028 this_sequence A125504 A069901 A075392`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.

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