OFFSET
1,1
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..1000
N. J. A. Sloane, Weigh transform
FORMULA
Dirichlet convolution of A038066 with characteristic function of powers of 2.
a(n) = 1/n*(-(-5)^n + Sum_{d<n and d|n} (-1)^(n/d)*d*a(d)). - Seiichi Manyama, Jun 23 2018
CROSSREFS
KEYWORD
sign
AUTHOR
Christian G. Bower, Jan 04 1999
STATUS
approved