OFFSET
1,1
FORMULA
a(n) = 2^A157007(n) + 27. - Elmo R. Oliveira, Nov 08 2023
MATHEMATICA
a = Delete[Union[Flatten[Table[If [PrimeQ[2^n + 27] == True, 2^n + 27, 0], {n, 1, 400}]]], 1]
PROG
(Magma) [ a: n in [0..750] | IsPrime(a) where a is 2^n+27]; // Vincenzo Librandi, Nov 13 2010
CROSSREFS
KEYWORD
nonn
AUTHOR
Roger L. Bagula, Mar 02 2005
STATUS
approved