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A172332
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Floor(n*(sqrt(13)+sqrt(5))).
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15
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0, 5, 11, 17, 23, 29, 35, 40, 46, 52, 58, 64, 70, 75, 81, 87, 93, 99, 105, 110, 116, 122, 128, 134, 140, 146, 151, 157, 163, 169, 175, 181, 186, 192, 198, 204, 210, 216, 221, 227, 233, 239, 245, 251, 257, 262, 268, 274, 280, 286, 292
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OFFSET
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0,2
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COMMENTS
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Also integer part of n*5.8416192529..., where the constant is the largest root of x^4 -36*x^2 +64.
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..1000
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MATHEMATICA
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With[{c = Sqrt[13] + Sqrt[5]}, Floor[c Range[0, 70]]] (* Vincenzo Librandi, Aug 01 2013 *)
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PROG
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(Magma) [Floor(n*(Sqrt(13)+Sqrt(5))): n in [0..60]];
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CROSSREFS
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Cf. A110117, A172323-A172332, A172334, A172336-A172338.
Sequence in context: A189751 A314248 A314249 * A314250 A105644 A348931
Adjacent sequences: A172329 A172330 A172331 * A172333 A172334 A172335
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KEYWORD
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nonn,less,easy
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AUTHOR
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Vincenzo Librandi, Feb 01 2010
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STATUS
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approved
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