A247511 - OEIS

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A247511

Number of preprimes of the third kind (A247394) with the smallest prime divisor equals prime(n).

5

12, 12, 3, 4, 2, 3, 4, 1, 4, 1, 1, 2, 3, 4, 1, 4, 2, 1, 2, 2, 4, 5, 0, 0, 1, 0, 0, 5, 3, 2, 2, 5, 1, 2, 2, 2, 2, 2, 1, 4, 0, 1, 0, 4, 6, 2, 0, 2, 2, 1, 4, 2, 3, 3, 1, 2, 1, 1, 2, 5, 1, 1, 0, 4, 2, 4, 1, 1, 1, 3, 2, 2, 1, 2, 2, 1, 2, 3, 1, 3, 0, 2, 1, 3, 3, 1

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..86.

Vladimir Shevelev, A classification of the positive integers over primes

CROSSREFS

Cf. A000040, A156759, A247393, A247394, A247509, A247510, A247606.

Sequence in context: A155825 A125509 A281251 * A374989 A097824 A133208

Adjacent sequences: A247508 A247509 A247510 * A247512 A247513 A247514

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Sep 18 2014

EXTENSIONS

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

STATUS

approved