OFFSET
1,2
COMMENTS
Multiplicative because A124859 is.
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..20000
FORMULA
a(1) = 1, and for n > 1, a(n) = -Sum_{d|n, d < n} A124859(n/d) * a(d).
PROG
CROSSREFS
KEYWORD
sign,mult
AUTHOR
Antti Karttunen, Jun 05 2022
STATUS
approved