OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..6
Dario A. Alpern, Factors of Generalized Fermat Numbers
MAPLE
MATHEMATICA
Table[4^(3^n) - 2^(3^n) + 1, {n, 0, 5}]
PROG
(PARI) a(n)=1<<(2*3^n)-1<<3^n+1 \\ Charles R Greathouse IV, Oct 31 2011
(Magma) [4^(3^n) - 2^(3^n) + 1: n in [0..7]]; // Vincenzo Librandi, Jun 29 2014
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Artur Jasinski, Oct 31 2011
STATUS
approved