M000000304

$$\pi=-92839355812\arctan\left(\frac{1}{102428655030}\right)+39096842928\arctan\left(\frac{1}{120563046313}\right)+175704640880\arctan\left(\frac{1}{121409547033}\right)+55957203804\arctan\left(\frac{1}{138873731225}\right)+207344234436\arctan\left(\frac{1}{202954204459}\right)+19060154296\arctan\left(\frac{1}{261002206018}\right)-148999302132\arctan\left(\frac{1}{269007136889}\right)+236142941296\arctan\left(\frac{1}{391410916593}\right)+87453565460\arctan\left(\frac{1}{548275361132}\right)+333965182760\arctan\left(\frac{1}{656902304557}\right)-64049399408\arctan\left(\frac{1}{1372432573478}\right)+127713315340\arctan\left(\frac{1}{1622274975907}\right)+1950085840\arctan\left(\frac{1}{2639669568570}\right)+18054250312\arctan\left(\frac{1}{2710120765097}\right)+123322569020\arctan\left(\frac{1}{3761284561432}\right)-123270252496\arctan\left(\frac{2}{13078246979509}\right)+146133419748\arctan\left(\frac{1}{10892900268195}\right)-153178496800\arctan\left(\frac{1}{17780261434697}\right)+71037268268\arctan\left(\frac{1}{38759264489343}\right)+37862301832\arctan\left(\frac{1}{69971515635443}\right)+54986941560\arctan\left(\frac{1}{169838669284032}\right)+234192855456\arctan\left(\frac{1}{292512967855698}\right)-32577230532\arctan\left(\frac{1}{772654028018543}\right)-170875225032\arctan\left(\frac{1}{1948025182233307}\right)$$