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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 (list; graph; refs; listen; history; text; internal format)
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

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

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]];

CROSSREFS

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

Sequence in context: A189751 A314248 A314249 * A314250 A105644 A314251

Adjacent sequences:  A172329 A172330 A172331 * A172333 A172334 A172335

KEYWORD

nonn,less,easy

AUTHOR

Vincenzo Librandi, Feb 01 2010

STATUS

approved

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Last modified November 26 00:50 EST 2020. Contains 338631 sequences. (Running on oeis4.)