login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A050540 Numbers n such that 29*2^n-1 is prime. 1
4, 16, 76, 148, 184, 11008, 147316, 644044, 1478344 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300
PROG
(PARI) is(n)=ispseudoprime(29*2^n-1) \\ Charles R Greathouse IV, Jun 12 2017
CROSSREFS
Cf. A032364 = 29*2^n+1 is prime.
Sequence in context: A301577 A324171 A204772 * A346662 A094559 A199214
KEYWORD
hard,nonn
AUTHOR
N. J. A. Sloane, Dec 29 1999
EXTENSIONS
One more term from Hugo Pfoertner, Aug 29 2004
1478344 from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
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 28 17:25 EDT 2024. Contains 371254 sequences. (Running on oeis4.)