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A274288 Numbers that are a product of distinct numbers in row 4 of the Wythoff array, A035513. 5
9, 15, 24, 39, 63, 102, 135, 165, 216, 267, 351, 360, 432, 567, 585, 699, 918, 936, 945, 1131, 1485, 1512, 1530, 1830, 2403, 2448, 2457, 2475, 2961, 3240, 3888, 3960, 3978, 4005, 4791, 5265, 6291, 6408, 6426, 6435, 6480, 7752, 8424, 8505, 10179, 10368, 10395 (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

135 = 9*15, 3240 = 9*15*24.

MATHEMATICA

f[1] = 9; f[2] = 15; 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, A274191.

Sequence in context: A102739 A124622 A189051 * A172292 A075638 A145743

Adjacent sequences:  A274285 A274286 A274287 * A274289 A274290 A274291

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 17 2016

STATUS

approved

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Last modified October 24 01:20 EDT 2018. Contains 316541 sequences. (Running on oeis4.)