M000000190

$$\pi=244\arctan\left(\frac{1}{72}\right)-340\arctan\left(\frac{1}{1483}\right)-28\arctan\left(\frac{1}{9932}\right)-116\arctan\left(\frac{1}{11811}\right)-156\arctan\left(\frac{1}{29718}\right)+116\arctan\left(\frac{1}{1516693}\right)$$