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

Author

Reinhard Zumkeller, Jul 04 2002

Keywords

• nonn

Comments

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

Examples

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

Links

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

Crossrefs

Cf. A072698, A072700.