id:A086412 - OEIS Search Results

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Number of distinct prime factors of 3-smooth numbers.

+0
4

0, 1, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 2, 1, 2, 1, 2, 2, 1, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 1, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2 (list; graph; listen)

	OFFSET	`1,5`
	COMMENT	`a(n) = A001221(A003586(n));` `a(n) <= 2.`
	CROSSREFS	`Cf. A086413, A086414.` `Adjacent sequences: A086409 A086410 A086411 this_sequence A086413 A086414 A086415` `Sequence in context: A079706 A078703 A090629 this_sequence A006928 A087890 A008676`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 18 2003`

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Last modified October 12 12:59 EDT 2008. Contains 144830 sequences.

AT&T Labs Research