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A028369 2^(2^(n-1)+n-2). 3
1, 4, 32, 1024, 524288, 68719476736, 590295810358705651712, 21778071482940061661655974875633165533184 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..12

PROG

(MAGMA) [2^(n-1)*2^(2^(n-1)-1): n in [1..10]]; // Vincenzo Librandi, Jun 03 2011

(PARI) a(n)=1<<(2^(n-1)+n-2) \\ Charles R Greathouse IV, Jun 05 2011

CROSSREFS

Sequence in context: A134087 A132854 A136471 * A081790 A053005 A012092

Adjacent sequences:  A028366 A028367 A028368 * A028370 A028371 A028372

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 13:05 EST 2012. Contains 206024 sequences.