A028890 Product of digits of n is a nonzero Fibonacci number.

1, 2, 3, 5, 8, 11, 12, 13, 15, 18, 21, 24, 31, 37, 42, 51, 73, 81, 111, 112, 113, 115, 118, 121, 124, 131, 137, 142, 151, 173, 181, 211, 214, 222, 241, 289, 298, 311, 317, 368, 371, 386, 412, 421, 449, 466, 494, 511, 638, 646, 664, 683, 713, 731, 811, 829, 836

Offset

1,2

Comments

Numbers n whose product of digits is 1, 2, 3, 5, 8, 21, or 144 (these being the only 7-smooth Fibonacci numbers). - Robert Israel, Jan 26 2020

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

select(t -> member(convert(convert(t, base, 10), `*`), [1, 2, 3, 5, 8, 21, 144]), [$1..999]); # Robert Israel, Jan 26 2020

Crossrefs

Cf. A007954, A028891, A028840.

Sequence in context: A280205 A276731 A028891 * A189716 A002480 A173672

Adjacent sequences: A028887 A028888 A028889 * A028891 A028892 A028893

Keyword

nonn,base,easy

Author

N. J. A. Sloane.

Extensions

More terms from Erich Friedman.

Name clarified and offset changed by Robert Israel, Jan 26 2020

Status

approved