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

1,1

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

Table of n, a(n) for n=1..62.

Giovanni Resta, Zuckerman numbers, Numbers Aplenty.

Crossrefs

Cf. A007602, A056770, A288069.

Cf. A003635 (similar for Niven numbers).

Sequence in context: A164865 A253594 A330698 * A046424 A076226 A122435

Adjacent sequences: A342590 A342591 A342592 * A342594 A342595 A342596

Keyword

nonn,base

Author

Bernard Schott, Mar 16 2021

Status

approved