A152582 Numbers of the form 9^(2^n) + 2.

11, 83, 6563, 43046723, 1853020188851843, 3433683820292512484657849089283, 11790184577738583171520872861412518665678211592275841109096963

Offset

1,1

Comments

Except for the first term, this sequence is the same as A057727. There appears to be no divisibility rule for this sequence.

Links

Table of n, a(n) for n=1..7.

Prog

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

Crossrefs

Cf. A059919 (-1), A011764 (-2).

Sequence in context: A068848 A167577 A129077 * A191003 A012478 A239461

Adjacent sequences: A152579 A152580 A152581 * A152583 A152584 A152585

Keyword

nonn

Author

Cino Hilliard, Dec 08 2008

Status

approved