1. ## Pell Numbers

Hi

Can anyone point me to a proof that for pell number P

$n\to \infty \ \ \ \ \ \dfrac{P_{n-1}}{P_n} \to \dfrac{2}{\sqrt{2}}$

Thanks

2. ## Re: Pell Numbers

Have you seen this webpage?

3. ## Re: Pell Numbers

Originally Posted by Plato
Have you seen this webpage?
Yes

Was tired when I posted. Now I've had some coffee I know $\dfrac{2}{\sqrt{2}}=\sqrt{2}$

Sorry and thanks