A059746 Numbers k such that 3*2^k + 7 is prime.
1, 2, 3, 5, 6, 9, 10, 11, 19, 22, 30, 35, 41, 91, 101, 125, 261, 706, 750, 1315, 1629, 2082, 2979, 3029, 3077, 3950, 4097, 5491, 5746, 10761, 12946, 14770, 15642, 30006, 34157, 34722, 48499, 62862
Offset: 1
Links
- Henri Lifchitz and Renaud Lifchitz, PRP Records.
Crossrefs
Cf. A059747.
Programs
-
Mathematica
Do[ If[ PrimeQ[ 3*2^n + 7 ], Print[n] ], {n, 1, 3000} ] -
PARI
is(n)=ispseudoprime(3*2^n+7) \\ Charles R Greathouse IV, Jun 13 2017
Extensions
More terms from Robert G. Wilson v, Jan 28 2003
a(33) from Michael S. Branicky, Jan 09 2023
a(34) from Michael S. Branicky, Jan 12 2023
a(35)-a(37) from Michael S. Branicky, Apr 06 2023
a(38) from Michael S. Branicky, Jul 31 2024
Comments