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A104412 Number of prime factors, with multiplicity, of the pentanacci numbers A001591. 5
0, 0, 1, 2, 3, 4, 1, 1, 5, 3, 5, 6, 2, 4, 6, 5, 9, 6, 2, 2, 6, 4, 6, 7, 1, 3, 3, 6, 4, 7, 4, 2, 7, 3, 9, 7, 3, 2, 2, 8, 9, 8, 2, 4, 11, 7, 9, 7, 7, 2, 4, 5, 6, 7, 3, 2, 7, 7, 13, 8, 4, 5, 5, 6, 10, 5, 4, 7, 11, 7, 8, 9, 4, 5, 4, 8, 7, 8, 4, 5, 6, 5, 10, 12, 2, 4, 5, 9, 12, 11, 7, 4, 13 (list; graph; refs; listen; history; internal format)
OFFSET

5,4

COMMENTS

Prime pentanacci numbers (A105757) correspond to 1s in the sequence, semiprimes to 2, and so forth.

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 5..125

FORMULA

a(n) = A001222(A001591(n)). a(n) = bigomega(A001591(n)).

CROSSREFS

Cf. A001591, A001222, A104411.

Sequence in context: A138297 A139458 A190594 * A195451 A118310 A073057

Adjacent sequences:  A104409 A104410 A104411 * A104413 A104414 A104415

KEYWORD

nonn

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com), Mar 05 2005

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Last modified February 13 16:35 EST 2012. Contains 205523 sequences.