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

Author

N. J. A. Sloane

Keywords

• nonn
• base
• easy

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

Crossrefs

Cf. A007954, A028891, A028840.

Programs

Maple

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

Extensions

More terms from Erich Friedman.

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