OFFSET
1,5
FORMULA
a(n) ~ Pi * phi^n / (2 * sqrt(5) * log(phi) * n), where phi = A001622 = (1+sqrt(5))/2 is the golden ratio, log(phi) = A002390. - Vaclav Kotesovec, May 09 2016
EXAMPLE
a(9) = floor(AGM(1, Fibonacci(9))) = floor(AGM(1, 34)) = 10.
MATHEMATICA
Table[Floor[ArithmeticGeometricMean[1, Fibonacci[n]]], {n, 1, 50}] (* Vaclav Kotesovec, May 09 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alex Ratushnyak, Dec 25 2013
STATUS
approved