A247510 Number of preprimes of the second kind (A247393) with the smallest prime divisor equals prime(n).

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

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