login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A274286 Numbers that are a product of distinct numbers in row 2 of the Wythoff array, A035513. 3
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 (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

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

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]

CROSSREFS

Cf. A160009, A274280.

Sequence in context: A207871 A023666 A023502 * A024882 A296551 A087203

Adjacent sequences:  A274283 A274284 A274285 * A274287 A274288 A274289

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 17 2016

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 18 12:52 EDT 2018. Contains 316321 sequences. (Running on oeis4.)