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a(n) = floor(9^n/5^n).
1

%I #11 Sep 08 2022 08:45:13

%S 1,1,3,5,10,18,34,61,110,198,357,642,1156,2082,3748,6746,12143,21859,

%T 39346,70823,127482,229468,413042,743477,1338258,2408865,4335958,

%U 7804725,14048506,25287310,45517159,81930887,147475597,265456074

%N a(n) = floor(9^n/5^n).

%H Vincenzo Librandi, <a href="/A094986/b094986.txt">Table of n, a(n) for n = 0..1000</a>

%t Table[ Floor[(9/5)^n], {n, 0, 30}]

%o (Magma) [Floor(9^n / 5^n): n in [0..40]]; // _Vincenzo Librandi_, Sep 08 2011

%Y Cf. A002379, A094969 - A094999.

%K nonn,easy

%O 0,3

%A _Robert G. Wilson v_, May 26 2004