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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

Clark Kimberling, Table of n, a(n) for n = 1..1000

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

Cf. A160009, A274288.

Sequence in context: A310175 A146562 A179893 * A133331 A276381 A259728

Adjacent sequences:  A274188 A274189 A274190 * A274192 A274193 A274194

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 17 2016

STATUS

approved

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Last modified September 27 19:04 EDT 2020. Contains 337388 sequences. (Running on oeis4.)