OFFSET
0,3
FORMULA
a(n) = 3^ceiling(log_3(2^n)) - 2^n.
MATHEMATICA
dp23[n_]:=Module[{t=2^n}, 3^Ceiling[Log[3, t]]-t]; Array[dp23, 40, 0] (* Harvey P. Dale, Nov 20 2015 *)
PROG
(PARI) for(n=1, 50, print1(3^ceil(log(2^n)/log(3))-2^n", "))
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jens Voß, Jul 02 2001
EXTENSIONS
More terms from Ralf Stephan, Mar 21 2003
STATUS
approved