OFFSET
1,1
COMMENTS
The subsequence of prime values starts 7, 19, 379, 523, 1087, ... - Muniru A Asiru, Apr 28 2019
LINKS
Jeppe Stig Nielsen, Table of n, a(n) for n = 1..45
Ray Ballinger, Proth Search Page
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300
Wilfrid Keller, List of primes k.2^n - 1 for k < 300
MAPLE
select(k->isprime(159*2^k+1), [$0..1000]); # Muniru A Asiru, Dec 21 2018
MATHEMATICA
Select[Range[1000], PrimeQ[159*2^# + 1] & ] (* Robert Price, Dec 18 2018 *)
PROG
(PARI) is(n)=ispseudoprime(159*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
(Magma) [n: n in [1..1000] | IsPrime(159*2^n+1)]; // G. C. Greubel, Apr 28 2019
(Sage) [n for n in (1..1000) if is_prime(159*2^n+1)] # G. C. Greubel, Apr 28 2019
(GAP) Filtered([1..1000], k-> IsPrime(159*2^k+1)); # G. C. Greubel, Apr 28 2019
CROSSREFS
KEYWORD
nonn,hard
AUTHOR
EXTENSIONS
a(36)-a(44) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 18 2018
STATUS
approved