%I
%S 1,1,2,3,6,10,15,25,39,63,100,158,251,398,630,1000,1584,2511,3981,
%T 6309,10000,15848,25118,39810,63095,100000,158489,251188,398107,
%U 630957,1000000,1584893,2511886,3981071,6309573
%N Powers of fifth root of 10 rounded down.
%C Also, number of powers of 5 <= 10^k, with k=0, 1, 2, ...  _Paolo P. Lava_, Jun 23 2014
%H Harvey P. Dale, <a href="/A018141/b018141.txt">Table of n, a(n) for n = 0..1000</a>
%t Floor[(10^(1/5))^Range[0,40]] (* _Harvey P. Dale_, Sep 24 2012 *)
%K nonn
%O 0,3
%A _N. J. A. Sloane_.
