M000000025

$$\pi=332\arctan\left(\frac{1}{107}\right)+68\arctan\left(\frac{1}{4443}\right)+272\arctan\left(\frac{1}{11343}\right)-20\arctan\left(\frac{1}{113021}\right)-136\arctan\left(\frac{1}{595667}\right)+20\arctan\left(\frac{1}{33366019650}\right)-20\arctan\left(\frac{1}{43599522992503626068}\right)$$