M000000009

$$\pi=5380\arctan\left(\frac{1}{1710}\right)+332\arctan\left(\frac{1}{5827}\right)-2324\arctan\left(\frac{2}{97059}\right)-1416\arctan\left(\frac{1}{103697}\right)-48\arctan\left(\frac{2}{2513489}\right)-332\arctan\left(\frac{1}{1561886607}\right)-1416\arctan\left(\frac{2}{18280007883}\right)+2324\arctan\left(\frac{1}{14130722757}\right)$$