A004429 Geometric mean of digits of n (rounded to nearest integer).

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 0, 1, 2, 2, 3, 3, 3, 4, 4, 4, 0, 2, 2, 3, 3, 4, 4, 5, 5, 5, 0, 2, 3, 3, 4, 4, 5, 5, 6, 6, 0, 2, 3, 4, 4, 5, 5, 6, 6, 7, 0, 2, 3, 4, 5, 5, 6, 6, 7, 7, 0, 3, 4, 5, 5, 6, 6, 7, 7, 8, 0, 3, 4, 5, 6, 6, 7, 7, 8, 8, 0, 3, 4, 5, 6, 7, 7, 8, 8, 9, 0, 0, 0, 0, 0, 0, 0, 0

Offset

0,3

Links

Table of n, a(n) for n=0..107.

Prog

(PARI) A004429(n)=round(sqrtn(prod(i=1, #n=digits(n), n[i]), #n)) \\ M. F. Hasler, May 10 2015

Crossrefs

Cf. A004428, A007954, A257830.

Sequence in context: A115353 A031298 A004428 * A338379 A004426 A262188

Adjacent sequences: A004426 A004427 A004428 * A004430 A004431 A004432

Keyword

nonn,base

Author

N. J. A. Sloane

Status

approved