id:A167339 - OEIS Search Results

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Totally multiplicative sequence with a(p) = p*(p-2) = p^2-2p for prime p.

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1

1, 0, 3, 0, 15, 0, 35, 0, 9, 0, 99, 0, 143, 0, 45, 0, 255, 0, 323, 0, 105, 0, 483, 0, 225, 0, 27, 0, 783, 0, 899, 0, 297, 0, 525, 0, 1295, 0, 429, 0, 1599, 0, 1763, 0, 135, 0, 2115, 0, 1225, 0 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`Multiplicative with a(p^e) = (p(p-2))^e. If n = Product p(k)^e(k) then a(n) = Product (p(k)(p(k)-2))^e(k). a(2k) = 0 for k >= 1, a(n) = A000027(n) * A166586(n).`
	CROSSREFS	`Sequence in context: A138349 A135399 A065121 this_sequence A138540 A123023 A130637` `Adjacent sequences: A167336 A167337 A167338 this_sequence A167340 A167341 A167342`
	KEYWORD	`nonn`
	AUTHOR	`Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Nov 01 2009`

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Last modified March 20 09:10 EDT 2010. Contains 173642 sequences.

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