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

Author

Vladimir Shevelev, Sep 18 2014

Keywords

• nonn

Links

• Vladimir Shevelev, A classification of the positive integers over primes

Crossrefs

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

Extensions

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