A328582 Least common multiple of nonzero digits in primorial base expansion of n.

1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 6, 6, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 6, 6, 3, 3, 3, 3, 6, 6, 6, 6, 6, 6

Offset

0,5

Comments

a(0) = 1 as an empty product.

Links

Antti Karttunen, Table of n, a(n) for n = 0..32768

Index entries for sequences related to lcm's

Index entries for sequences related to primorial base

Formula

a(n) = A072411(A276086(n)).

Prog

(PARI) A328582(n) = { my(m=1, p=2); while(n, if(n%p, m = lcm(m, n%p)); n = n\p; p = nextprime(1+p)); (m); };

Crossrefs

Cf. A072411, A276086, A328581.

Cf. A276156 (positions of 1's).

Sequence in context: A246359 A328114 A343504 * A227153 A328581 A238643

Adjacent sequences: A328579 A328580 A328581 * A328583 A328584 A328585

Keyword

nonn

Author

Antti Karttunen, Oct 21 2019

Status

approved