OFFSET
2,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 2..1000
PROG
(Magma) [3^n-3*2^(n-2): n in [2..35]]; // Vincenzo Librandi, Jun 30 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Apr 14 2010
STATUS
approved