%I #11 Aug 28 2016 18:23:37
%S 1,6,9,15,18,24,27,30,36,39,45,48,54,54,60,63,69,72,78,81,81,87,90,96,
%T 99,105,108,111,117,120,126,129,135,135,141,144,150,153,159,162,162,
%U 168,171,177,180,186,189,192,198,201,207,210,216,216,222,225,231,234,240,243,243
%N Least positive integer k for which 9^n divides k!.
%H T. D. Noe, <a href="/A020648/b020648.txt">Table of n, a(n) for n = 0..1000</a>
%K nonn
%O 0,2
%A _David W. Wilson_