M000057

$$\pi=2324\arctan\left(\frac{1}{1252}\right)+3056\arctan\left(\frac{1}{2855}\right)+1064\arctan\left(\frac{1}{5832}\right)+1464\arctan\left(\frac{1}{58898}\right)+780\arctan\left(\frac{1}{110443}\right)+2148\arctan\left(\frac{1}{4841182}\right)+1064\arctan\left(\frac{1}{6826318}\right)$$