A086166 (2^n - 1)^(2^n - 1).

1, 27, 823543, 437893890380859375, 17069174130723235958610643029059314756044734431, 228273036346967044979900512337165522400819024722490933829954793073267717315004135590642802687246850771579138342847

Offset

1,2

Links

Table of n, a(n) for n=1..6.

Formula

A000225(n)^A000225(n)

Mathematica

f[n_]:=Module[{x=2^n-1}, x^x]
f/@Range[6]  (* Harvey P. Dale, Feb 26 2011 *)

Crossrefs

Cf. A000225.

Sequence in context: A281956 A068738 A132649 * A132661 A050650 A106536

Adjacent sequences: A086163 A086164 A086165 * A086167 A086168 A086169

Keyword

easy,nonn

Author

Zak Seidov, Aug 25 2003

Status

approved