OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..11
MATHEMATICA
Select[Table[2^n + n^2 - 1, {n, 0, 300}], PrimeQ]
PROG
(Magma) [a: n in [0..250] | IsPrime(a) where a is 2^n+n^2-1];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Sep 03 2012
STATUS
approved