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A079488 Number of prime divisors (counted with multiplicity) of A138613(n). 2
1, 1, 2, 4, 7, 14, 23, 36, 72, 106, 172, 314, 542, 1008, 1766, 3151 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The old entry with this sequence number was a duplicate of A052553.

LINKS

Table of n, a(n) for n=1..16.

FORMULA

a(n) = A001222(A138613(n)). - R. J. Mathar, Sep 21 2008

CROSSREFS

Cf. A138613, A033766, A001222.

Sequence in context: A181655 A218938 A018567 * A054160 A034426 A000075

Adjacent sequences:  A079485 A079486 A079487 * A079489 A079490 A079491

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Sep 20 2008

EXTENSIONS

a(10) from R. J. Mathar, Sep 21 2008

a(11)-a(12) from Donovan Johnson, Dec 19 2008

a(13)-a(16) from Daniel Suteu, Dec 11 2019

STATUS

approved

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Last modified May 12 01:50 EDT 2021. Contains 343808 sequences. (Running on oeis4.)