OFFSET
1,2
COMMENTS
See the Comment on distinct-product sequences in A160009.
EXAMPLE
20 = 4*5, 180 = 4*5*9.
MATHEMATICA
f[1] = 1; f[2] = 4; z = 32; f[n_] := f[n - 1] + f[n - 2]; f = Table[f[n], {n, 1, z}]; f
s = {1}; Do[s = Union[s, Select[s*f[[i]], # <= f[[z]] &]], {i, z}]; s
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 17 2016
STATUS
approved