A018053 - OEIS

%I #6 Jul 27 2022 15:53:21

%S 1,2,2,3,3,4,6,7,9,12,16,21,27,36,47,62,81,107,141,185,243,320,421,

%T 554,729,960,1263,1662,2187,2879,3788,4986,6561,8635,11364,14956,

%U 19683,25905,34092,44868,59049,77713

%N Powers of fourth root of 3 rounded up.

%t Ceiling[Surd[3,4]^Range[0,50]] (* _Harvey P. Dale_, Jul 27 2022 *)

%K nonn

%O 0,2

%A _N. J. A. Sloane_.