login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A167796 Numbers with primitive root 8. 20
3, 5, 11, 25, 29, 53, 59, 83, 101, 107, 121, 125, 131, 149, 173, 179, 197, 227, 269, 293, 317, 347, 389, 419, 443, 461, 467, 491, 509, 557, 563, 587, 625, 653, 659, 677, 701, 773, 797, 821, 827, 841, 941, 947, 1019, 1061, 1091, 1109, 1187, 1229, 1259, 1277 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

pr=8; Select[Range[2, 2000], MultiplicativeOrder[pr, # ] == EulerPhi[ # ] &]

CROSSREFS

Cf. A019338 (primes with primitive root 8)

Sequence in context: A330951 A018116 A259643 * A261896 A285184 A018008

Adjacent sequences:  A167793 A167794 A167795 * A167797 A167798 A167799

KEYWORD

nonn

AUTHOR

T. D. Noe, Nov 12 2009

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 30 16:23 EST 2021. Contains 349423 sequences. (Running on oeis4.)