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A339716 Dirichlet g.f.: Product_{k>=2} (1 - k^(-s))^9. 0
1, -9, -9, 27, -9, 72, -9, -12, 27, 72, -9, -171, -9, 72, 72, -90, -9, -171, -9, -171, 72, 72, -9, -63, 27, 72, -12, -171, -9, -495, -9, 135, 72, 72, 72, 189, -9, 72, 72, -63, -9, -495, -9, -171, -171, 72, -9, 747, 27, -171, 72, -171, -9, -63, 72, -63, 72, 72, -9, 801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..60.

FORMULA

a(1) = 1; a(n) = -Sum_{d|n, d < n} A339324(n/d) * a(d).

a(p^k) = A010817(k) for prime p.

CROSSREFS

Cf. A010817, A114592, A339324, A339701, A339702, A339703, A339704, A339705, A339706, A339707.

Sequence in context: A014725 A202208 A059816 * A111005 A076089 A046000

Adjacent sequences:  A339713 A339714 A339715 * A339717 A339718 A339719

KEYWORD

sign

AUTHOR

Ilya Gutkovskiy, Dec 14 2020

STATUS

approved

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Last modified September 24 06:13 EDT 2021. Contains 347623 sequences. (Running on oeis4.)