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Powers of fourth root of 20 rounded down.
2

%I #11 Jun 22 2022 18:19:04

%S 1,2,4,9,20,42,89,189,400,845,1788,3782,8000,16917,35777,75659,160000,

%T 338358,715541,1513186,3200000,6767176,14310835,30263731,64000000,

%U 135343521,286216701,605274629,1280000000,2706870434,5724334022,12105492595,25600000000

%N Powers of fourth root of 20 rounded down.

%t Floor[(Power[20, (4)^-1])^Range[0,30]] (* _Harvey P. Dale_, Apr 25 2011 *)

%Y Cf. A011016, A018103, A018104.

%K nonn,easy

%O 0,2

%A _N. J. A. Sloane_