M000000016

$$\pi=2324\arctan\left(\frac{1}{580}\right)-1592\arctan\left(\frac{1}{1710}\right)+332\arctan\left(\frac{1}{5827}\right)+908\arctan\left(\frac{1}{103697}\right)-48\arctan\left(\frac{2}{2513489}\right)-332\arctan\left(\frac{1}{1561886607}\right)+908\arctan\left(\frac{2}{18280007883}\right)$$