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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 December 5 15:11 EST 2019. Contains 329753 sequences. (Running on oeis4.)