M000000063

$$\pi=2324\arctan\left(\frac{1}{580}\right)-1592\arctan\left(\frac{1}{1710}\right)+332\arctan\left(\frac{1}{5832}\right)+908\arctan\left(\frac{1}{105218}\right)-48\arctan\left(\frac{2}{2513489}\right)+332\arctan\left(\frac{1}{6826318}\right)+908\arctan\left(\frac{1}{7167807}\right)$$