A331311 a(n) = A331287(n) / A331310(n).

1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 2, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 2, 1, 3, 1, 2, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 1, 2, 1

Offset

1,9

Links

Antti Karttunen, Table of n, a(n) for n = 1..65537

Formula

a(n) = A331287(n) / A331310(n) = gcd(n, A225546(n)) / gcd(n, A293442(n)).

Prog

(PARI) A331311(n) = (A331287(n)/A331310(n));

Crossrefs

Cf. A225546, A293442, A331287, A331310, A331312.

Sequence in context: A342275 A324049 A194510 * A285770 A370892 A174820

Adjacent sequences: A331308 A331309 A331310 * A331312 A331313 A331314

Keyword

nonn

Author

Antti Karttunen, Jan 21 2020

Status

approved