A247510 - OEIS

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A247510

Number of preprimes of the second kind (A247393) with the smallest prime divisor equals prime(n).

5

8, 4, 5, 2, 3, 1, 3, 5, 2, 4, 2, 1, 2, 3, 4, 1, 3, 1, 1, 2, 1, 2, 6, 3, 2, 3, 1, 1, 4, 2, 2, 0, 3, 1, 2, 2, 1, 3, 2, 0, 4, 0, 2, 0, 2, 5, 2, 1, 2, 2, 0, 3, 3, 2, 3, 1, 3, 0, 0, 1, 5, 0, 1, 1, 4, 3, 4, 1, 2, 2, 3, 2, 2, 1, 2, 3, 1, 3, 4, 2, 4, 1, 2, 1, 2, 4, 1

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..87.

Vladimir Shevelev, A classification of the positive integers over primes

CROSSREFS

Cf. A000040, A156759, A247393, A247394, A247509, A247511, A247606.

Sequence in context: A277530 A021546 A153620 * A226581 A131271 A093821

Adjacent sequences: A247507 A247508 A247509 * A247511 A247512 A247513

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Sep 18 2014

EXTENSIONS

More terms from Peter J. C. Moses, Sep 18 2014

STATUS

approved