A152591 17^(2^n) + 2.

19, 291, 83523, 6975757443, 48661191875666868483, 2367911594760467245844106297320951247363, 5607005320601059253161325667991103602003892399764752527847859167616581809464323

Offset

0,1

Comments

Except for the first term, these numbers are divisible by 3.

Links

Table of n, a(n) for n=0..6.

Mathematica

Table[17^2^n + 2, {n, 0, 6}] (* Arkadiusz Wesolowski, Jun 03 2013 *)

Prog

(PARI) g(a, n) = if(a%2, b=2, b=1); for(x=0, n, y=a^(2^x)+b; print1
(y", "))

Crossrefs

Sequence in context: A081045 A155017 A199245 * A051562 A330846 A324359

Adjacent sequences: A152588 A152589 A152590 * A152592 A152593 A152594

Keyword

easy,nonn

Author

Cino Hilliard, Dec 08 2008

Extensions

Name corrected by Arkadiusz Wesolowski, Jun 03 2013

Status

approved