M000000132

$$\pi=1933364\arctan\left(\frac{2}{1230349}\right)-304172\arctan\left(\frac{1}{1984933}\right)+543632\arctan\left(\frac{1}{2298668}\right)-529976\arctan\left(\frac{2}{8649761}\right)+255632\arctan\left(\frac{1}{5033696}\right)-440436\arctan\left(\frac{1}{18975991}\right)-210620\arctan\left(\frac{1}{22709274}\right)+363584\arctan\left(\frac{1}{24208144}\right)+384128\arctan\left(\frac{2}{75804661}\right)-458276\arctan\left(\frac{1}{168623905}\right)-503572\arctan\left(\frac{1}{201229582}\right)-321600\arctan\left(\frac{1}{2189376182}\right)$$