id:A003593 - OEIS Search Results

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Numbers of the form 3^i*5^j.

+0
20

1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 243, 375, 405, 625, 675, 729, 1125, 1215, 1875, 2025, 2187, 3125, 3375, 3645, 5625, 6075, 6561, 9375, 10125, 10935, 15625, 16875, 18225, 19683, 28125, 30375, 32805, 46875, 50625, 54675, 59049 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Odd 5-smooth numbers (A051037). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 18 2005`
	FORMULA	`a(n) =1/sqrt(15)exp(sqrt(2ln(3)ln(5)n)) asymptotically - Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 22 2002`
	CROSSREFS	`Cf. A112751, A112752, A112753, A112754, A112755, A112756.` `Sequence in context: A057235 A057289 A056754 this_sequence A120027 A018586 A135342` `Adjacent sequences: A003590 A003591 A003592 this_sequence A003594 A003595 A003596`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified December 19 21:04 EST 2009. Contains 171054 sequences.

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