A101331 Fermat(Mersenne(x)) = 2^(2^(2^x-1))+1

3, 5, 257, 340282366920938463463374607431768211457

Offset

0,1

Comments

Fermat-Mersenne numbers.

Links

Table of n, a(n) for n=0..3.

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

Sequence in context: A268535 A268695 A167483 * A232239 A087368 A309740

Adjacent sequences: A101328 A101329 A101330 * A101332 A101333 A101334

Keyword

nonn

Author

Jorge Coveiro, Dec 24 2004

Status

approved