login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A100904
Numbers k such that (10^k+1)^2-2 is prime.
3
22, 351, 1061, 410997
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..4.
Steven Harvey,
Carol and Kynea Primes
.
PROG
(PARI) is(n)=ispseudoprime((10^n+1)^2-2) \\
Charles R Greathouse IV
, Feb 19 2016
CROSSREFS
Sequence in context:
A096047
A016320
A103722
*
A036738
A332855
A054940
Adjacent sequences:
A100901
A100902
A100903
*
A100905
A100906
A100907
KEYWORD
nonn
,
more
AUTHOR
Ray Chandler
, Nov 21 2004
EXTENSIONS
a(4) from
Ryan Propper
, Feb 21 2024
STATUS
approved
Lookup
|
Welcome
|
Wiki
|
Register
|
Music
|
Plot 2
|
Demos
|
Index
|
Browse
|
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 18 09:10 EDT 2024. Contains 375999 sequences. (Running on oeis4.)