A342593 Numbers m that are not the quotient of a Zuckerman number divided by the product of its digits.

10, 15, 16, 20, 24, 25, 26, 30, 32, 35, 38, 39, 40, 42, 43, 47, 50, 54, 55, 58, 60, 62, 65, 70, 71, 73, 75, 78, 80, 85, 87, 90, 92, 95, 99, 100, 105, 107, 108, 110, 115, 116, 117, 119, 120, 123, 125, 127, 130, 131, 135, 137, 138, 139, 140, 141, 142, 145, 146, 147, 150, 155

Offset: 1

Author

Bernard Schott, Mar 16 2021

Keywords

• nonn
• base

Comments

The Zuckerman numbers (A007602) are the numbers that are divisible by the product of their digits (see link).

m is a term iff A056770(m) = 0.

All the multiples of 10 are terms.

Many numbers that end with 5 are terms, first exceptions < 1000: 5, 45, 255, 315, 505, ...

Links

• Giovanni Resta, Zuckerman numbers, Numbers Aplenty.

Crossrefs

Cf. A007602, A056770, A288069.

Cf. A003635 (similar for Niven numbers).