M000000095

$$\pi=312352\arctan\left(\frac{1}{64893}\right)-375408\arctan\left(\frac{1}{131168}\right)+230500\arctan\left(\frac{2}{362619}\right)-34408\arctan\left(\frac{1}{1065376}\right)+71172\arctan\left(\frac{2}{2885139}\right)-147232\arctan\left(\frac{1}{1610057}\right)-43832\arctan\left(\frac{1}{6826318}\right)+76648\arctan\left(\frac{1}{27005643}\right)-117852\arctan\left(\frac{1}{33471703}\right)+51104\arctan\left(\frac{1}{103224943}\right)$$