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A028890
Product of digits of n is a nonzero Fibonacci number.
4
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
MAPLE
select(t -> member(convert(convert(t, base, 10), `*`), [1, 2, 3, 5, 8, 21, 144]), [$1..999]); # Robert Israel, Jan 26 2020
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
EXTENSIONS
More terms from Erich Friedman.
Name clarified and offset changed by Robert Israel, Jan 26 2020
STATUS
approved