A121340 List of triples {1^(2^k), 2^(2^k), 3^(2^k)} for k>0.

1, 2, 3, 1, 4, 9, 1, 16, 81, 1, 256, 6561, 1, 65536, 43046721, 1, 4294967296, 1853020188851841, 1, 18446744073709551616, 3433683820292512484657849089281, 1, 340282366920938463463374607431768211456, 11790184577738583171520872861412518665678211592275841109096961

Offset: 1

Author

Marius Solend (mariussolend(AT)hotmail.com), Aug 29 2006

Keywords

• nonn

Crossrefs

Cf. A000012, A001146, A011764.

Programs

Mathematica

NestList[{#[[ -3]]^2, #[[ -2]]^2, #[[ -1]]^2} &, {1, 2, 3}, 7] // Flatten (* Robert G. Wilson v, Sep 02 2006 *)
Flatten[Table[{1,2,3}^2^k,{k,0,8}]] (* Harvey P. Dale, May 24 2012 *)

Extensions

More terms from Robert G. Wilson v, Sep 02 2006