OFFSET
1,1
COMMENTS
a(6) > 376790.
EXAMPLE
Prime 5 is in sequence because 2^5 + 27 = 59, which is also prime.
MATHEMATICA
Select[Prime[Range[100000]], PrimeQ[(2^# + 27)] &]
PROG
(PARI) forprime(p=2, 10^30, if (isprime(2^p + 3^3), print1(p", "))); \\ Altug Alkan, Oct 04 2015
(Magma) [p: p in PrimesUpTo(100) | IsPrime(2^p+27)]; // Vincenzo Librandi, Oct 05 2015
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Robert Price, Oct 04 2015
STATUS
approved