Svoboda
|
Graniru
|
BBC Russia
|
Golosameriki
|
Facebook
login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A290200
Prime numbers of the form 4^k + 1.
8
2, 5, 17, 257, 65537
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,1
COMMENTS
Similar to Fermat primes,
A019434
, a(n) is of the form (2^2)^k + 1.
LINKS
Table of n, a(n) for n=1..5.
MATHEMATICA
Select[4^Range[0, 100] + 1, PrimeQ]
CROSSREFS
Cf.
A019434
,
A092506
.
Sequence in context:
A096848
A283107
A269834
*
A132198
A269835
A111635
Adjacent sequences:
A290197
A290198
A290199
*
A290201
A290202
A290203
KEYWORD
nonn
,
more
AUTHOR
Robert Price
, Jul 23 2017
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 September 9 05:33 EDT 2024. Contains 375759 sequences. (Running on oeis4.)