login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A084547 Numbers n that have primitive roots less than n that are nonnegative perfect cubes. 3
2, 11, 25, 29, 34, 50, 53, 58, 59, 83, 89, 101, 106, 107, 113, 121, 125, 131, 137, 149, 166, 167, 173, 178, 179, 197, 202, 214, 226, 227, 233, 250, 251, 257, 263, 269, 274, 281, 289, 293, 298, 317, 334, 346, 347, 353, 358, 359 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
89 is in the sequence because 27 is a primitive root of 89 and 27 is three cubed.
MATHEMATICA
q[n_] := Intersection[PrimitiveRootList[n], Range[Floor@Surd[n, 3]]^3] != {}; Select[Range[360], q] (* Amiram Eldar, Sep 25 2021 *)
CROSSREFS
Sequence in context: A370338 A012213 A012251 * A241238 A296285 A077482
KEYWORD
nonn
AUTHOR
Hauke Worpel (hw1(AT)email.com), May 30 2003
EXTENSIONS
a(1) inserted by Amiram Eldar, Sep 25 2021
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 28 07:05 EST 2024. Contains 370387 sequences. (Running on oeis4.)