login
A274282
Numbers that are a product of distinct numbers in A000285.
1
1, 4, 5, 9, 14, 20, 23, 36, 37, 45, 56, 60, 70, 92, 97, 115, 126, 148, 157, 180, 185, 207, 240, 254, 280, 300, 322, 333, 388, 411, 460, 485, 504, 518, 540, 628, 630, 665, 740, 785, 828, 840, 851, 873, 1016, 1035, 1076, 1200, 1270, 1288, 1332, 1358, 1380
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
Sequence in context: A363284 A363269 A120740 * A347553 A000285 A042031
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 17 2016
STATUS
approved