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A049238 Number of divisors of p_k-2, where p_k is the k-th prime. 0
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; refs; listen; history; internal format)
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: A134681 A144372 A182861 * A001616 A144371 A101296

Adjacent sequences:  A049235 A049236 A049237 * A049239 A049240 A049241

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu)

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.