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February 29th, 2016, 01:54 PM  #1 
Newbie Joined: Feb 2016 From: Durham Posts: 7 Thanks: 1  A new formula for pi?
I was playing about with some maths, and I managed to find an infinite sum for $\pi$: $$\sum_{N=0}^{\infty} \frac{(2N)!}{(N!)^2 (12N)(1+2N) 4^{N1}}$$ The thing is, I can't find it anywhere online. It is definitely correct, so might it be new? Does anyone know of it? I'm happy to show my proof if anyone wants to see it. 
February 29th, 2016, 04:00 PM  #3 
Newbie Joined: Feb 2016 From: Durham Posts: 7 Thanks: 1 
Sorry, my bad.


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formula, infinite, pii, sum 
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