The OEIS mourns the passing of
Jim Simons
and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A075081
Perfect powers q (
A001597
) such that (q-1)/2 is prime.
6
27, 2187, 1594323, 7509466514979724803946715958257547, 13915193059764305937984450503671774362956903094027
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,1
COMMENTS
It can be shown that q must be of the form 3^e with e prime.
The next terms are 3^541, 3^1091, 3^1367, 3^1627, 3^4177, 3^9011, 3^9551, ...
LINKS
Bo Gyu Jeong,
Table of n, a(n) for n = 1..9
CROSSREFS
Cf.
A075079
,
A076481
,
A028491
.
Sequence in context:
A017199
A223476
A013779
*
A017307
A167725
A366181
Adjacent sequences:
A075078
A075079
A075080
*
A075082
A075083
A075084
KEYWORD
nonn
,
hard
AUTHOR
Zak Seidov
, Oct 16 2002
EXTENSIONS
Extended by
Dean Hickerson
, Oct 16 2002
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 May 14 03:35 EDT 2024. Contains 372528 sequences. (Running on oeis4.)