A339704 - OEIS

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A339704

Dirichlet g.f.: Product_{k>=2} (1 - k^(-s))^5.

1, -5, -5, 5, -5, 20, -5, 10, 5, 20, -5, -5, -5, 20, 20, -15, -5, -5, -5, -5, 20, 20, -5, -55, 5, 20, 10, -5, -5, -55, -5, -6, 20, 20, 20, -45, -5, 20, 20, -55, -5, -55, -5, -5, -5, 20, -5, 20, 5, -5, 20, -5, -5, -55, 20, -55, 20, 20, -5, -55, -5, 20, -5, -5, 20, -55, -5, -5, 20, -55

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..70.

FORMULA

a(1) = 1; a(n) = -Sum_{d|n, d < n} A339320(n/d) * a(d).

a(p^k) = A000728(k) for prime p.

CROSSREFS

Cf. A000728, A114592, A339320, A339701, A339702, A339703, A339705, A339706, A339707.

Sequence in context: A291655 A078097 A285243 * A282209 A082476 A365492

Adjacent sequences: A339701 A339702 A339703 * A339705 A339706 A339707

KEYWORD

sign

AUTHOR

Ilya Gutkovskiy, Dec 13 2020

STATUS

approved