OFFSET
1
LINKS
FORMULA
a(2^n) = A000035(n), for all n >= 0.
a(n^2) = 0, for all n >= 1.
a(A000040(n)) = (-1)^(n-1).
a(A003961(n)) = -a(n).
a(2*n) = ((2-a(n)) mod 3) - 1. - Peter Munn, Aug 28 2021
PROG
CROSSREFS
KEYWORD
sign
AUTHOR
Antti Karttunen, Mar 01 2020
STATUS
approved