OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..8
FORMULA
a(n) = 2^A057203(n) + 23. [R. J. Mathar, Jun 18 2010]
MATHEMATICA
Select[Table[2^n + 23, {n, 0, 750}], PrimeQ] (* Vincenzo Librandi Jan 02 2014 *)
PROG
(Magma) [a: n in [0..750] | IsPrime(a) where a is 2^n+23];
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Apr 29 2010
STATUS
approved