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%I #16 Sep 08 2022 08:44:43
%S 1,4,19,83,361,1574,6859,29898,130321,568056,2476099,10793065,
%T 47045881,205068241,893871739,3896296579,16983563041,74029634997,
%U 322687697779,1406563064942,6131066257801,26724698233907
%N Powers of sqrt(19) rounded to nearest integer.
%H Vincenzo Librandi, <a href="/A017962/b017962.txt">Table of n, a(n) for n = 0..1000</a>
%t Floor[(Sqrt[19])^Range[0,30]+1/2] (* _Harvey P. Dale_, Oct 11 2011 *)
%o (PARI) a(n)=round(sqrt(19)^n) \\ _Charles R Greathouse IV_, Nov 18 2011
%o (Magma) [Round(Sqrt(19)^n): n in [0..30]]; // _Vincenzo Librandi_, Nov 20 2011
%K nonn
%O 0,2
%A _N. J. A. Sloane_