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A172336 a(n) = floor(n*(sqrt(13)+sqrt(2))). 15
0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 235, 240, 245, 250, 256, 261, 266, 271, 276 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

a(n) = integer part of n*(sqrt(13)+sqrt(2)), where the constant is the largest root of x^4 -30*x^2 +121.

LINKS

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

MATHEMATICA

With[{c = Sqrt[13] + Sqrt[2]}, Floor[c Range[0, 70]]] (* Vincenzo Librandi, Aug 01 2013 *)

PROG

(Magma) [Floor(n*(Sqrt(13)+Sqrt(2))): n in [0..60]];

(PARI) for(n=0, 50, print1(floor(n*(sqrt(13)+sqrt(2))), ", ")) \\ G. C. Greubel, Jul 05 2017

CROSSREFS

Cf. A110117, A172323-A172332, A172334, A172337, A172338.

Sequence in context: A248359 A008587 A008706 * A140233 A172328 A330003

Adjacent sequences: A172333 A172334 A172335 * A172337 A172338 A172339

KEYWORD

nonn,less,easy

AUTHOR

Vincenzo Librandi, Feb 01 2010

STATUS

approved

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Last modified December 1 23:44 EST 2022. Contains 358485 sequences. (Running on oeis4.)