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A167316 Totally multiplicative sequence with a(p) = 6*(p-3) for prime p. 0
1, -6, 0, 36, 12, 0, 24, -216, 0, -72, 48, 0, 60, -144, 0, 1296, 84, 0, 96, 432, 0, -288, 120, 0, 144, -360, 0, 864, 156, 0, 168, -7776, 0, -504, 288, 0, 204, -576, 0, -2592, 228, 0, 240, 1728, 0, -720, 264, 0, 576, -864 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..50.

FORMULA

Multiplicative with a(p^e) = (6*(p-3))^e. If n = Product p(k)^e(k) then a(n) = Product (6*(p(k)-3))^e(k). a(3k) = 0 for k >= 1. a(n) = A165827(n) * A166589(n) = 6^bigomega(n) * A166589(n) = 6^A001222(n) * A166589(n).

CROSSREFS

Sequence in context: A209446 A047762 A186977 * A051768 A169769 A191688

Adjacent sequences:  A167313 A167314 A167315 * A167317 A167318 A167319

KEYWORD

sign,mult

AUTHOR

Jaroslav Krizek, Nov 01 2009

STATUS

approved

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Last modified May 23 05:24 EDT 2013. Contains 225585 sequences.