%I #9 Jul 29 2015 01:28:02
%S 4,9,42,56,74,99,133,177,236,315,420,560,747,996,1328,1771,2362,3149,
%T 4199,5599,7466,9954,13273,17697,23596,31462,41950,74577,99437,132583,
%U 235703,314271,419028,558704,744938,993251,1324335,1765780,2354374
%N Values of floor((4/3)^n) that are composite.
%D R. K. Guy, Unsolved Problems in Number Theory, E19
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PowerFloors.html">Power Floors</a>
%t Select[Rest[Union[Floor[(4/3)^Range[80]]]],!PrimeQ[#]&] (* _Harvey P. Dale_, Sep 23 2011 *)
%Y Cf. A046038, A067905, A070762.
%K nonn
%O 1,1
%A _Eric W. Weisstein_, May 04 2002