OFFSET
1
LINKS
EXAMPLE
n = 45 = 3^2 * 5 is an odd number with two distinct prime factors, therefore a(45) = 1.
PROG
(PARI) A353676(n) = ((n%2) && (2==omega(n)));
CROSSREFS
Characteristic function of A225375.
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 03 2022
STATUS
approved