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A172324 Floor(n*(sqrt(7)+sqrt(5))). 1

%I #12 Sep 08 2022 08:45:50

%S 0,4,9,14,19,24,29,34,39,43,48,53,58,63,68,73,78,82,87,92,97,102,107,

%T 112,117,122,126,131,136,141,146,151,156,161,165,170,175,180,185,190,

%U 195,200,205,209,214,219,224,229,234,239,244,248,253,258,263,268,273

%N Floor(n*(sqrt(7)+sqrt(5))).

%C a(n) = integer part of n*(sqrt(7)+sqrt(5)), where the constant is the largest root of x^4 -24*x^2 +4.

%H Vincenzo Librandi, <a href="/A172324/b172324.txt">Table of n, a(n) for n = 0..1000</a>

%t With[{c = Sqrt[7] + Sqrt[5]}, Floor[c Range[0, 70]]] (* _Vincenzo Librandi_, Aug 01 2013 *)

%o (Magma) [Floor(n*(Sqrt(7)+Sqrt(5))): n in [0..60]];

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

%K nonn,easy,less

%O 0,2

%A _Vincenzo Librandi_, Feb 01 2010

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Last modified April 24 10:00 EDT 2024. Contains 371935 sequences. (Running on oeis4.)