id:A112755 - OEIS Search Results

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Smallest prime factor of n-th number of the form 3^i*5^j.

+0
4

1, 3, 5, 3, 3, 5, 3, 3, 3, 3, 5, 3, 3, 3, 3, 3, 5, 3, 3, 3, 3, 3, 3, 3, 5, 3, 3, 3, 3, 3, 3, 3, 3, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 3, 3 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A020639(A003593(n));` `a(n) <= A112756(n) <= 5.`
	CROSSREFS	`Cf. A112763, A086410.` `Sequence in context: A161670 A135514 A092553 this_sequence A126659 A102294 A021287` `Adjacent sequences: A112752 A112753 A112754 this_sequence A112756 A112757 A112758`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 18 2005`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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