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A086166
(2^n - 1)^(2^n - 1).
1
1, 27, 823543, 437893890380859375, 17069174130723235958610643029059314756044734431, 228273036346967044979900512337165522400819024722490933829954793073267717315004135590642802687246850771579138342847
OFFSET
1,2
FORMULA
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: A068738 A377768 A132649 * A132661 A050650 A106536
KEYWORD
easy,nonn
AUTHOR
Zak Seidov, Aug 25 2003
STATUS
approved