OFFSET
0,2
LINKS
Clark Kimberling, Table of n, a(n) for n = 0..10000
FORMULA
a(n) = floor(n*(7 + sqrt(5))/2).
MATHEMATICA
z = 500; r = 3+GoldenRatio; b = Table[Floor[k*r], {k, 0, z}]; (* A276855 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Sep 24 2016
STATUS
approved