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A072699 Number of prime factors of A072697(n). 4
1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 2, 1, 2, 1, 3, 1, 1, 2, 1, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 3, 1, 1, 2, 2, 1, 2, 2, 2, 1, 1, 1, 3, 1, 1, 3, 2, 1, 3, 2, 2, 2, 1, 2, 1, 2, 1, 1, 2, 2, 2, 1, 1, 2, 1, 2, 2, 1, 1, 3, 1, 2, 1, 1, 2, 2, 3, 2, 1, 1, 3, 1, 1, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 3, 1, 1, 1, 3, 3, 1, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

a(n) = A001222(A072697(n)) = A001221(A072697(n)).

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

EXAMPLE

a(19) = A001222(A072697(19)) = A001222(42) = A001222(2*3*7) = 3.

CROSSREFS

Cf. A072698, A072700.

Sequence in context: A262885 A097305 A120675 * A143589 A003651 A325028

Adjacent sequences:  A072696 A072697 A072698 * A072700 A072701 A072702

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jul 04 2002

STATUS

approved

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Last modified March 4 14:23 EST 2021. Contains 341794 sequences. (Running on oeis4.)