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%I #22 Sep 08 2022 08:44:43
%S 1,3,10,32,100,316,1000,3162,10000,31623,100000,316228,1000000,
%T 3162278,10000000,31622777,100000000,316227766,1000000000,3162277660,
%U 10000000000,31622776602,100000000000,316227766017,1000000000000,3162277660168,10000000000000
%N Powers of sqrt(10) rounded to nearest integer.
%H Vincenzo Librandi, <a href="/A017935/b017935.txt">Table of n, a(n) for n = 0..1994</a> (truncated by Georg Fischer, Apr 27 2019)
%F a(n) = round(10^(n/2)).
%p a:= proc(n) Digits:= 10+iquo(n,2): round(sqrt(10)^n) end:
%p seq(a(n), n=0..40); # _Alois P. Heinz_, Apr 27 2019
%t Floor[(Sqrt[10]^Range[0,40]+1/2)] (* _Vincenzo Librandi_, Nov 19 2011 *)
%o (PARI) a(n)=round(sqrt(10)^n) \\ _Charles R Greathouse IV_, Nov 18 2011
%o (Magma) [Round(Sqrt(10)^n): n in [0..40]]; // _Vincenzo Librandi_, Nov 19 2011
%K nonn
%O 0,2
%A _N. J. A. Sloane_