id:A049238 - OEIS Search Results

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

+0
1

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

	OFFSET	`1,2`
	FORMULA	`DivisorSigma[ 0, Prime[ n ]-2 ]`
	EXAMPLE	`p(23)=83, a(23)=A000005(83-2)=DivisorSigma[ 0,81 ]=5`
	CROSSREFS	`Sequence in context: A076640 A134681 A144372 this_sequence A001616 A144371 A101296` `Adjacent sequences: A049235 A049236 A049237 this_sequence A049239 A049240 A049241`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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