M000000077

$$\pi=3232\arctan\left(\frac{1}{1068}\right)+156\arctan\left(\frac{1}{2436}\right)+2344\arctan\left(\frac{1}{26307}\right)-684\arctan\left(\frac{1}{58898}\right)-1084\arctan\left(\frac{1}{78813}\right)-1368\arctan\left(\frac{1}{110443}\right)-176\arctan\left(\frac{1}{15996882}\right)$$