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A195173 a(n) = 5*n - floor(2n*r), where r=(1+sqrt(5))/2 (the golden ratio). 1
0, 2, 4, 6, 8, 9, 11, 13, 15, 16, 18, 20, 22, 23, 25, 27, 29, 30, 32, 34, 36, 38, 39, 41, 43, 45, 46, 48, 50, 52, 53, 55, 57, 59, 60, 62, 64, 66, 68, 69, 71, 73, 75, 76, 78, 80, 82, 83, 85, 87, 89, 90, 92, 94, 96, 98, 99, 101, 103, 105, 106, 108, 110, 112, 113, 115 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

MATHEMATICA

With[{c = GoldenRatio}, Table[5*n - Floor[2*c*n], {n, 0, 50}]] (* G. C. Greubel, Oct 31 2017 *)

PROG

(MAGMA) [5*n-Floor(n*(1+Sqrt(5))): n in [0..70]]; // Vincenzo Librandi, Sep 11 2011

(PARI) for(n=0, 50, print1(5*n - floor(n*(1+sqrt(5))), ", ")) \\ G. C. Greubel, Oct 31 2017

CROSSREFS

Sequence in context: A184740 A184638 A047294 * A215000 A228246 A184587

Adjacent sequences:  A195170 A195171 A195172 * A195174 A195175 A195176

KEYWORD

nonn

AUTHOR

Clark Kimberling, Sep 10 2011

EXTENSIONS

Offset changed from 1 to 0 by Vincenzo Librandi, Sep 11 2011

STATUS

approved

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Last modified May 21 00:36 EDT 2022. Contains 353886 sequences. (Running on oeis4.)