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A344766
a(n) = gcd(sigma(n), A011772(n)).
3
1, 3, 2, 7, 2, 3, 2, 15, 1, 2, 2, 4, 2, 1, 1, 31, 2, 1, 2, 3, 2, 1, 2, 15, 1, 6, 2, 7, 2, 3, 2, 63, 1, 2, 2, 1, 2, 1, 4, 15, 2, 4, 2, 4, 3, 1, 2, 4, 3, 3, 1, 1, 2, 3, 2, 24, 2, 2, 2, 3, 2, 1, 1, 127, 1, 1, 2, 2, 1, 4, 2, 3, 2, 6, 4, 28, 3, 12, 2, 2, 1, 2, 2, 16, 2, 1, 1, 4, 2, 1, 1, 1, 2, 1, 1, 63, 2, 3, 4, 1, 2, 3, 2, 2, 2
OFFSET
1,2
FORMULA
a(n) = gcd(A000203(n), A011772(n)).
a(n) = gcd(A000203(n), A344765(n)) = gcd(A011772(n), A344765(n)).
PROG
(PARI) A344766(n) = gcd(sigma(n), A011772(n));
CROSSREFS
Cf. also A344764.
Sequence in context: A071189 A137822 A300845 * A302714 A193574 A209639
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 30 2021
STATUS
approved