A072699 Number of prime factors of A072697(n).

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

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