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 A327268 Dirichlet g.f.: 1 / (zeta(s) * zeta(s-1) * (1 - 2^(2 - s))). 2
 1, 1, -4, 6, -6, -4, -8, 24, 3, -6, -12, -24, -14, -8, 24, 96, -18, 3, -20, -36, 32, -12, -24, -96, 5, -14, 0, -48, -30, 24, -32, 384, 48, -18, 48, 18, -38, -20, 56, -144, -42, 32, -44, -72, -18, -24, -48, -384, 7, 5, 72, -84, -54, 0, 72, -192, 80, -30, -60, 144, -62, -32, -24, 1536, 84 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Dirichlet inverse of A002129. LINKS Georg Fischer, Table of n, a(n) for n = 1..1000 FORMULA a(1) = 1; a(n) = -Sum_{d|n, d

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Last modified December 16 06:18 EST 2019. Contains 330016 sequences. (Running on oeis4.)