OFFSET
1,5
LINKS
FORMULA
PROG
(PARI)
A091255sq(a, b) = fromdigits(Vec(lift(gcd(Pol(binary(a))*Mod(1, 2), Pol(binary(b))*Mod(1, 2)))), 2);
A325634(n) = A091255sq(n, sigma(n));
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 21 2019
STATUS
approved