OFFSET
1
COMMENTS
LINKS
FORMULA
From Antti Karttunen, Jan 08 2023: (Start)
Multiplicative with a(2^e) = 1, and for odd primes p, a(p^e) = A209229(p+1) if e = 1, and 0 if e > 1.
Multiplicative with a(p^e) = [p==2] + (A036987(p)*[e==1]), where [ ] is the Iverson bracket.
(End)
PROG
CROSSREFS
KEYWORD
nonn,mult
AUTHOR
Antti Karttunen, Aug 09 2020
EXTENSIONS
Keyword:mult added by Antti Karttunen, Jan 06 2023
STATUS
approved