id:A104660 - OEIS Search Results

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Number of distinct prime divisors of 44...443 (with n 4s).

+0
2

1, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 2, 2, 3, 3 (list; graph; listen)

	OFFSET	`1,3`
	EXAMPLE	`The number of distinct prime divisors of 43 is 1 (prime).` `The number of distinct prime divisors of 443 is 1 (prime).` `The number of distinct prime divisors of 4443 is 2.`
	CROSSREFS	`Cf. A104518.` `Sequence in context: A030454 A103360 A104469 this_sequence A093613 A118816 A097289` `Adjacent sequences: A104657 A104658 A104659 this_sequence A104661 A104662 A104663`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Apr 21 2005`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.