OFFSET
0,1
COMMENTS
Fermat-Mersenne numbers.
EXAMPLE
F(M(0))= 3
F(M(1))= 5
F(M(2))= 257
F(M(3))= 340282366920938463463374607431768211457
PROG
(PARI) for(x=0, 4, print( ( 2^(2^(2^x-1))+1 )))
CROSSREFS
KEYWORD
nonn
AUTHOR
Jorge Coveiro, Dec 24 2004
STATUS
approved