M000000273

$$\pi=\frac{118194530516}{7}\arctan\left(\frac{2}{10355370165}\right)\frac{-713050640}{7}\arctan\left(\frac{1}{32863722478}\right)+\frac{10174006956}{7}\arctan\left(\frac{2}{86479075199}\right)\frac{-967982396}{7}\arctan\left(\frac{2}{112899039159}\right)\frac{-46669106208}{7}\arctan\left(\frac{1}{71617196968}\right)-1727948868\arctan\left(\frac{1}{78535779057}\right)\frac{-20299598948}{7}\arctan\left(\frac{1}{102428655030}\right)+9939054248\arctan\left(\frac{1}{197877956739}\right)\frac{-37923267936}{7}\arctan\left(\frac{1}{225891903693}\right)\frac{-29842080316}{7}\arctan\left(\frac{1}{277386771993}\right)+\frac{7760729668}{7}\arctan\left(\frac{1}{283378114193}\right)\frac{-30252298976}{7}\arctan\left(\frac{1}{324363564309}\right)+\frac{12745685780}{7}\arctan\left(\frac{1}{469027618483}\right)\frac{-23776538508}{7}\arctan\left(\frac{1}{492806748932}\right)\frac{-16360773876}{7}\arctan\left(\frac{1}{821345641657}\right)\frac{-29842080316}{7}\arctan\left(\frac{1}{2961447369272}\right)+\frac{42061337044}{7}\arctan\left(\frac{1}{3737240479718}\right)+\frac{9938080920}{7}\arctan\left(\frac{1}{28148191112477}\right)+3319338608\arctan\left(\frac{1}{55707370528529}\right)+\frac{12924571140}{7}\arctan\left(\frac{1}{69971515635443}\right)\frac{-58370644620}{7}\arctan\left(\frac{1}{109805699900318}\right)+3959621036\arctan\left(\frac{1}{7474541196075273}\right)$$