M000178

$$\pi=89898168\arctan\left(\frac{1}{82189674}\right)+115983700\arctan\left(\frac{1}{133311327}\right)+25725960\arctan\left(\frac{1}{152087733}\right)+112176128\arctan\left(\frac{1}{227661182}\right)+187937912\arctan\left(\frac{1}{244653118}\right)-53948548\arctan\left(\frac{1}{284862638}\right)-31992188\arctan\left(\frac{1}{355671793}\right)-45985944\arctan\left(\frac{1}{403478642}\right)+81231144\arctan\left(\frac{1}{403916362}\right)-42342444\arctan\left(\frac{1}{727507932}\right)-62632540\arctan\left(\frac{1}{15234751332}\right)+81743564\arctan\left(\frac{2}{74522099649}\right)+6107352\arctan\left(\frac{1}{106334643058}\right)-29427040\arctan\left(\frac{1}{134520516108}\right)+27077796\arctan\left(\frac{1}{138873731225}\right)-28429632\arctan\left(\frac{1}{169838669284032}\right)$$