OFFSET
0,4
FORMULA
a(n) = floor((3-sqrt(5))*n).
MATHEMATICA
Table[Floor[(3-5^(1/2))n], {n, 0, 120}]
PROG
(PARI) a(n)=3*n-1-sqrtint(5*n^2) \\ Charles R Greathouse IV, Sep 02 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Mar 08 2011
STATUS
approved