M000032

$$\pi=332\arctan\left(\frac{1}{239}\right)+1328\arctan\left(\frac{1}{580}\right)-928\arctan\left(\frac{1}{1710}\right)+576\arctan\left(\frac{1}{103697}\right)-48\arctan\left(\frac{2}{2513489}\right)+576\arctan\left(\frac{2}{18280007883}\right)$$