OFFSET
1,1
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..3000
Laura Pierson, A power sum expansion for the Kromatic symmetric function, arXiv:2408.01395 [math.CO], 2024. See p. 5.
N. J. A. Sloane, Weigh transform
FORMULA
Dirichlet convolution of A038063 with characteristic function of powers of 2.
a(n) = 1/n*(-(-2)^n + Sum_{d<n and d divides n} (-1)^(n/d)*d*a(d)). - Vladeta Jovovic, Sep 06 2002
CROSSREFS
KEYWORD
sign
AUTHOR
Christian G. Bower, Jan 04 1999
STATUS
approved