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A172332 Floor(n*(sqrt(13)+sqrt(5))). 15

%I #9 Sep 08 2022 08:45:50

%S 0,5,11,17,23,29,35,40,46,52,58,64,70,75,81,87,93,99,105,110,116,122,

%T 128,134,140,146,151,157,163,169,175,181,186,192,198,204,210,216,221,

%U 227,233,239,245,251,257,262,268,274,280,286,292

%N Floor(n*(sqrt(13)+sqrt(5))).

%C Also integer part of n*5.8416192529..., where the constant is the largest root of x^4 -36*x^2 +64.

%H Vincenzo Librandi, <a href="/A172332/b172332.txt">Table of n, a(n) for n = 0..1000</a>

%t With[{c = Sqrt[13] + Sqrt[5]}, Floor[c Range[0, 70]]] (* _Vincenzo Librandi_, Aug 01 2013 *)

%o (Magma) [Floor(n*(Sqrt(13)+Sqrt(5))): n in [0..60]];

%Y Cf. A110117, A172323-A172332, A172334, A172336-A172338.

%K nonn,less,easy

%O 0,2

%A _Vincenzo Librandi_, Feb 01 2010

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)