OFFSET
1,2
COMMENTS
a(32) > 10^5.
EXAMPLE
5 is a member since 4^5 + 3^6 = 1024 + 729 = 1753 which is a prime number.
MATHEMATICA
Select[Range[0, 100000], PrimeQ[4^# + 3^(# + 1)] &]
PROG
(PARI) lista(nn) = for(n=1, nn, if(ispseudoprime(4^n + 3^(n+1)), print1(n, ", "))); \\ Altug Alkan, Jul 02 2016
(Magma) [n: n in [1..700] | IsPrime(4^n + 3^(n+1))]; // Vincenzo Librandi, Jul 03 2016
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Robert Price, Jul 02 2016
STATUS
approved