1,2
Vincenzo Librandi, Table of n, a(n) for n = 1..12
(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
Sequence in context: A134087 A132854 A136471 * A081790 A053005 A012092
Adjacent sequences: A028366 A028367 A028368 * A028370 A028371 A028372
nonn,easy
N. J. A. Sloane (njas(AT)research.att.com).