id:A112754 - OEIS Search Results

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Total number of prime factors of n-th number of the form 3^i*5^j.

+0
6

0, 1, 1, 2, 2, 2, 3, 3, 3, 4, 3, 4, 4, 5, 4, 5, 4, 5, 6, 5, 6, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9, 7, 8, 9, 10, 7, 8, 9, 10, 8, 9, 10, 11, 8, 9, 10, 11, 8, 9, 10, 11, 12, 9, 10, 11, 12, 9, 10, 11, 12, 13, 9, 10, 11, 12, 13, 10, 11, 12, 13, 14, 10, 11, 12, 13, 14, 10, 11, 12 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`a(n) = A001222(A003593(n)) = A022336(n) + A022337(n).`
	CROSSREFS	`Cf. A112753, A112759, A086413.` `Sequence in context: A080773 A134598 A064515 this_sequence A045864 A072302 A116513` `Adjacent sequences: A112751 A112752 A112753 this_sequence A112755 A112756 A112757`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Sep 18 2005`

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Last modified August 8 13:43 EDT 2008. Contains 142651 sequences.

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