A274286 Numbers that are a product of distinct numbers in row 2 of the Wythoff array, A035513.

4, 7, 11, 18, 28, 29, 44, 47, 72, 76, 77, 116, 123, 126, 188, 198, 199, 203, 304, 308, 319, 322, 329, 492, 504, 517, 521, 522, 532, 792, 796, 812, 836, 843, 846, 861, 1276, 1288, 1316, 1353, 1363, 1364, 1368, 1386, 1393, 2068, 2084, 2088, 2128, 2189, 2204

Offset: 1

Author

Clark Kimberling, Jun 17 2016

Keywords

• nonn
• easy

Comments

See the Comment on distinct-product sequences in A160009.

Examples

			28 = 4*7, 308 = 4*7*11.
		

Links

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

Crossrefs

Cf. A160009, A274280.

Programs

Mathematica

f[1] = 4; f[2] = 7; 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]