login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A226766
Least number k such that 4^(2^i) + k is prime for i = 0,1,..,n-1.
0
1, 1, 1, 1, 15, 93, 53097, 3014907, 2295032545, 46868723367
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,5
COMMENTS
a(7) = 53097 <
A129613
(7) (base-2 version).
LINKS
Table of n, a(n) for n=1..10.
CROSSREFS
Cf.
A129613
,
A225560
,
A226281
,
A226707
Sequence in context:
A108684
A125325
A126483
*
A114240
A189657
A190274
Adjacent sequences:
A226763
A226764
A226765
*
A226767
A226768
A226769
KEYWORD
nonn
,
more
AUTHOR
Robin Garcia
, Jun 17 2013
EXTENSIONS
a(10) from
Giovanni Resta
, Jun 17 2013
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 August 17 22:49 EDT 2024. Contains 375238 sequences. (Running on oeis4.)