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A172332
Floor(n*(sqrt(13)+sqrt(5))).
15
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
OFFSET
0,2
COMMENTS
Also integer part of n*5.8416192529..., where the constant is the largest root of x^4 -36*x^2 +64.
LINKS
MATHEMATICA
With[{c = Sqrt[13] + Sqrt[5]}, Floor[c Range[0, 70]]] (* Vincenzo Librandi, Aug 01 2013 *)
PROG
(Magma) [Floor(n*(Sqrt(13)+Sqrt(5))): n in [0..60]];
KEYWORD
nonn,less,easy
AUTHOR
Vincenzo Librandi, Feb 01 2010
STATUS
approved