OFFSET
1,4
FORMULA
floor(1/s)+floor(2/s)+...+floor(n/s), where s = (3+sqrt(5))/2 = (golden mean)^2.
a(n+1) = a(n) + n - A005206(n). - John Furey, Jun 03 2015
EXAMPLE
a(7)=0+0+1+1+1+2+2.
MATHEMATICA
Accumulate[With[{c=GoldenRatio^2}, Floor[Range[60]/c]]] (* Harvey P. Dale, Apr 20 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Dec 26 2010
STATUS
approved