M000000220

$$\pi=1338241020\arctan\left(\frac{1}{284862638}\right)-226662068\arctan\left(\frac{2}{604534317}\right)-498614448\arctan\left(\frac{1}{546365045}\right)-197419988\arctan\left(\frac{1}{909140573}\right)-482200946\arctan\left(\frac{1}{1304967682}\right)+788257334\arctan\left(\frac{1}{2189376182}\right)+589364100\arctan\left(\frac{2}{4532659739}\right)-151175058\arctan\left(\frac{1}{3261365450}\right)+181177650\arctan\left(\frac{2}{11352069609}\right)+661677140\arctan\left(\frac{1}{7427844818}\right)-349367476\arctan\left(\frac{1}{27354282288}\right)+386726182\arctan\left(\frac{2}{108928448489}\right)+138125026\arctan\left(\frac{1}{71617196968}\right)+716005060\arctan\left(\frac{1}{164432798314}\right)-648494728\arctan\left(\frac{2}{520629831511}\right)-28230342\arctan\left(\frac{1}{1197009532318}\right)+229232692\arctan\left(\frac{1}{4963640229982}\right)+755496530\arctan\left(\frac{1}{169838669284032}\right)$$