id:A166660 - OEIS Search Results

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Totally multiplicative sequence with a(p) = 2p+1 for prime p.

+0
2

1, 5, 7, 25, 11, 35, 15, 125, 49, 55, 23, 175, 27, 75, 77, 625, 35, 245, 39, 275, 105, 115, 47, 875, 121, 135, 343, 375, 59, 385, 63, 3125, 161, 175, 165, 1225, 75, 195, 189, 1375, 83, 525, 87, 575, 539, 235, 95, 4375, 225, 605 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Multiplicative with a(p^e) = (2p+1)^e. If n = Product p(k)^e(k) then a(n) = Product (2*p(k)+1)^e(k).`
	CROSSREFS	`Sequence in context: A121605 A024864 A025108 this_sequence A037374 A056717 A072370` `Adjacent sequences: A166657 A166658 A166659 this_sequence A166661 A166662 A166663`
	KEYWORD	`nonn`
	AUTHOR	`Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Oct 18 2009`

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Last modified March 9 00:15 EST 2010. Contains 173097 sequences.

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