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%I #11 Apr 04 2020 20:52:02
%S 3,6,9,18,27,36,45,54,63,72,81,90,99,108,135,162,189,216,243,270,297,
%T 324,351,378,405,432,459,486,513,540,567,594,621,648,675,702,729,756,
%U 783,810,837,864,891,918,945,972,999,1053,1134,1215,1296,1377,1458
%N Divisible by 3^k (where k is digit length of a(n)).
%H Harvey P. Dale, <a href="/A050625/b050625.txt">Table of n, a(n) for n = 1..1000</a>
%t Flatten[Table[3^n*Range[Ceiling[10^(n-1)/3^n],Floor[(10^n-1)/3^n]],{n,4}]] (* _Harvey P. Dale_, Feb 26 2015 *)
%t Select[Range[1500],Mod[#,3^IntegerLength[#]]==0&] (* _Harvey P. Dale_, Apr 04 2020 *)
%Y Cf. A035014, A050622, A050623.
%K nonn,base,easy
%O 1,1
%A _Patrick De Geest_, Jun 15 1999
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