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A172330
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Floor(n*(sqrt(13)+sqrt(11))).
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1
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0, 6, 13, 20, 27, 34, 41, 48, 55, 62, 69, 76, 83, 89, 96, 103, 110, 117, 124, 131, 138, 145, 152, 159, 166, 173, 179, 186, 193, 200, 207, 214, 221, 228, 235, 242, 249, 256, 263, 269, 276, 283, 290, 297, 304, 311, 318, 325, 332, 339, 346
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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*6.9221760658..., where the constant is the largest root of x^4 -48*x^2 +4.
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LINKS
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MATHEMATICA
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With[{c = Sqrt[13] + Sqrt[11]}, 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(11))): n in [0..60]];
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CROSSREFS
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KEYWORD
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nonn,easy,less
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AUTHOR
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STATUS
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approved
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