|
| |
|
|
A274191
|
|
Numbers that are a product of distinct numbers in A022086.
|
|
3
|
|
|
|
3, 6, 9, 15, 18, 24, 27, 39, 45, 54, 63, 72, 90, 102, 117, 135, 144, 162, 165, 189, 216, 234, 267, 270, 306, 351, 360, 378, 405, 432, 495, 567, 585, 612, 648, 699, 702, 801, 810, 918, 936, 945, 990, 1053, 1080, 1131, 1134, 1296, 1485, 1512, 1530, 1602, 1701
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
See the Comment on distinct-product sequences in A160009.
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
17 = 3*6; 405 = 3*9*15.
|
|
|
MATHEMATICA
|
f[1] = 3; f[2] = 6; z = 33; 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}]; s1 = Rest[s]
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn,easy
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
