

A195174


a(n) = 5*n  floor(3*n*r), where r=(1+sqrt(5))/2 (the golden ratio.)


1



0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13
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OFFSET

0,8


LINKS

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


MATHEMATICA

Table[5nFloor[3n GoldenRatio], {n, 0, 90}] (* Harvey P. Dale, Sep 10 2014 *)


PROG

(MAGMA) [5*nFloor(3*n*(1+Sqrt(5))/2): n in [0..70]]; // Vincenzo Librandi, Sep 11 2011
(PARI) for(n=0, 50, print1(5*n  floor(3*n*(1+sqrt(5))/2), ", ")) \\ G. C. Greubel, Oct 31 2017


CROSSREFS

Sequence in context: A226046 A133877 A132270 * A187185 A054896 A052364
Adjacent sequences: A195171 A195172 A195173 * A195175 A195176 A195177


KEYWORD

nonn


AUTHOR

Clark Kimberling, Sep 10 2011


EXTENSIONS

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


STATUS

approved



