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A274022
Primes of the form 2^(2^n) + 3.
2
5, 7, 19, 65539
OFFSET
1,1
COMMENTS
Terms given correspond to n = 0, 1, 2, and 4.
Next term >= 2^2^28 + 3. - Charles R Greathouse IV, Jun 08 2016
MATHEMATICA
Select[Table[2^(2^n) + 3, {n, 0, 15}], PrimeQ]
PROG
(Magma) [a: n in [0..10] | IsPrime(a) where a is 2^(2^n)+3];
(PARI) for(n=0, 4, if(ispseudoprime(t=2^2^n+3), print1(t", "))) \\ Charles R Greathouse IV, Jun 08 2016
CROSSREFS
Cf. similar sequences listed in A273547.
Sequence in context: A231865 A130729 A222411 * A117321 A279252 A279957
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Jun 07 2016
STATUS
approved