M000000152

$$\pi=244\arctan\left(\frac{1}{72}\right)-340\arctan\left(\frac{1}{1483}\right)-28\arctan\left(\frac{1}{9932}\right)-116\arctan\left(\frac{2}{23809}\right)-156\arctan\left(\frac{1}{29718}\right)-116\arctan\left(\frac{1}{176717682}\right)$$