OFFSET
1,1
COMMENTS
a(32) > 2*10^5. - Robert Price, Nov 15 2013
EXAMPLE
For k = 2, 3^2 + 32 = 41 (prime). Hence k = 2 is in the sequence.
MATHEMATICA
Do[If[PrimeQ[3^n + 32], Print[n]], {n, 10000}]
PROG
(PARI) is(n)=isprime(3^n+32) \\ Charles R Greathouse IV, Feb 17 2017
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Nicolas M. Perrault, Nov 10 2012
EXTENSIONS
a(23)-a(31) from Robert Price, Nov 15 2013
STATUS
approved