A017945 - OEIS

%I #13 Sep 08 2022 08:44:43

%S 1,4,13,47,169,610,2197,7922,28561,102979,371293,1338716,4826809,

%T 17403308,62748517,226242996,815730721,2941158942,10604499373,

%U 38235066240,137858491849,497055861120,1792160394037

%N Powers of sqrt(13) rounded up.

%H Vincenzo Librandi, <a href="/A017945/b017945.txt">Table of n, a(n) for n = 0..900</a>

%t Ceiling[(Sqrt[13])^Range[0,25]]  (* _Harvey P. Dale_, Apr 02 2011 *)

%o (Magma) [Ceiling(Sqrt(13^n)): n in [0..30]]; // _Vincenzo Librandi_, Nov 21 2011

%K nonn

%O 0,2

%A _N. J. A. Sloane_