A058060 - OEIS

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A058060

Number of distinct prime factors of d(n), the number of divisors of n.

0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 2, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,12`
	LINKS	`Table of n, a(n) for n=0..104.`
	FORMULA	`a(n)=A001221(A000005(n))`
	EXAMPLE	`n=120=8.3.5, d(n)=16, a(n)=1.`
	CROSSREFS	`A001221, A000005, A058061.` `Sequence in context: A124148 A174435 A088530 * A088323 A003652 A071625` `Adjacent sequences: A058057 A058058 A058059 * A058061 A058062 A058063`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Nov 23 2000`
	STATUS	`approved`

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Last modified May 24 06:20 EDT 2013. Contains 225617 sequences.