

A050540


Numbers n such that 29*2^n1 is prime.


1




OFFSET

1,1


LINKS

Table of n, a(n) for n=1..9.
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
Index entries for sequences of n such that k*2^n1 (or k*2^n+1) is prime
Kosmaj, Riesel list k<300.


PROG

(PARI) is(n)=ispseudoprime(29*2^n1) \\ Charles R Greathouse IV, Jun 12 2017


CROSSREFS

Cf. A032364 = 29*2^n+1 is prime.
Sequence in context: A301577 A324171 A204772 * A094559 A199214 A241023
Adjacent sequences: A050537 A050538 A050539 * A050541 A050542 A050543


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



