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A328560 Numbers whose product of digits is a power of 10. 6
1, 11, 25, 52, 111, 125, 152, 215, 251, 455, 512, 521, 545, 554, 1111, 1125, 1152, 1215, 1251, 1455, 1512, 1521, 1545, 1554, 2115, 2151, 2255, 2511, 2525, 2552, 4155, 4515, 4551, 5112, 5121, 5145, 5154, 5211, 5225, 5252, 5415, 5451, 5514, 5522, 5541, 5558, 5585 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

All terms must have only 1, 2, 4, 5, 8 as digits.

A subsequence of A328095.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..27446 (all terms with up to 9 digits)

MAPLE

q:= n-> (m-> m>0 and m=10^ilog[10](m))(mul(i, i=convert(n, base, 10))):

select(q, [$1..6000])[];

CROSSREFS

Cf. A028846, A276037, A284375, A316315, A326833, A328095.

Sequence in context: A031025 A140675 A161532 * A118648 A262105 A105270

Adjacent sequences:  A328557 A328558 A328559 * A328561 A328562 A328563

KEYWORD

nonn,base

AUTHOR

Chai Wah Wu, Alois P. Heinz and David A. Corneth, Oct 19 2019

STATUS

approved

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Last modified August 18 06:21 EDT 2022. Contains 356204 sequences. (Running on oeis4.)