login
A053364
Numbers k such that 295*2^k + 1 is prime.
1
2, 4, 8, 30, 52, 68, 128, 140, 170, 182, 186, 294, 332, 498, 516, 528, 534, 1106, 1932, 2248, 2262, 4560, 5046, 11978, 13670, 14510, 20262, 23588, 26550, 31730, 37788, 42002, 71068, 95736, 172802, 296862, 312776, 398136, 475400, 501770, 561426, 1648168
OFFSET
1,1
MATHEMATICA
Select[Range[5*10^3], PrimeQ[295*2^# + 1] &] (* G. C. Greubel, May 25 2018 *)
PROG
(PARI) is(n)=ispseudoprime(295*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017
(Magma) [n: n in [1..3000] | IsPrime(295*2^n+1)]; // G. C. Greubel, May 25 2018
CROSSREFS
Sequence in context: A366080 A018346 A006398 * A326330 A018355 A100083
KEYWORD
hard,nonn
AUTHOR
N. J. A. Sloane, Dec 29 1999
EXTENSIONS
a(35)-a(42) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 22 2018
STATUS
approved