A274288 Numbers that are a product of distinct numbers in row 4 of the Wythoff array, A035513.
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
Offset: 1
Examples
135 = 9*15, 3240 = 9*15*24.
Links
- Clark Kimberling, Table of n, a(n) for n = 1..1000
Programs
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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]
Comments