login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A092733
Sum of two consecutive primes of the form 2^x+1 (including Fermat primes and 2).
0
5, 8, 22, 274, 65794
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..5.
EXAMPLE
a(1) = [2^0+1] + [2^(2^0)+1]
a(2) = [2^(2^0)+1] + [2^(2^1)+1]
a(3) = [2^(2^1)+1] + [2^(2^2)+1]
a(4) = [2^(2^2)+1] + [2^(2^3)+1]
a(5) = [2^(2^3)+1] + [2^(2^4)+1]
MATHEMATICA
Total/@Partition[Select[2^Range[0, 50]+1, PrimeQ], 2, 1] (*
Harvey P. Dale
, Jun 21 2021 *)
CROSSREFS
Cf.
A092506
,
A019434
,
A063897
.
Sequence in context:
A120042
A120043
A063897
*
A116884
A192651
A105963
Adjacent sequences:
A092730
A092731
A092732
*
A092734
A092735
A092736
KEYWORD
nonn
,
more
AUTHOR
Jorge Coveiro
, Apr 12 2004
EXTENSIONS
Offset corrected by
Arkadiusz Wesolowski
, Oct 22 2011
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 March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)