A330735 a(n) = n mod A309639(n), where A309639(n) is the index of the least harmonic number H_i whose denominator (A002805) is divisible by n.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 3

Offset

1,21

Links

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

Formula

a(n) = n mod A309639(n).

Prog

(PARI) A330735(n) = (n%A309639(n));

Crossrefs

Cf. A309639, A330691, A330692, A330734, A330736 (indices of nonzero terms).

Sequence in context: A051174 A273089 A362021 * A127773 A194498 A193986

Adjacent sequences: A330732 A330733 A330734 * A330736 A330737 A330738

Keyword

nonn

Author

Antti Karttunen, Jan 10 2020

Status

approved