f\left(n+1\right)=\frac{1}{\pi}\left(f\left(n\right)^2-n-1\right); f(0)= 3.609993083

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.