M000000146

$$\pi=9365084\arctan\left(\frac{1}{4218932}\right)+11392288\arctan\left(\frac{1}{11612398}\right)-841916\arctan\left(\frac{1}{27089889}\right)+1834296\arctan\left(\frac{1}{34713882}\right)-3914764\arctan\left(\frac{1}{50668324}\right)+612100\arctan\left(\frac{1}{55153444}\right)-4124028\arctan\left(\frac{1}{113014933}\right)+5643648\arctan\left(\frac{1}{226983307}\right)-4326680\arctan\left(\frac{1}{1085592682}\right)+3220256\arctan\left(\frac{2}{4949475989}\right)+1557212\arctan\left(\frac{1}{2701984943}\right)-8469904\arctan\left(\frac{1}{5475957057}\right)+3419160\arctan\left(\frac{1}{6436804193}\right)-1054988\arctan\left(\frac{1}{14033378718}\right)$$