M000000276

$$\pi=-29608575908\arctan\left(\frac{1}{32863722478}\right)+18338362496\arctan\left(\frac{2}{86479075199}\right)+12621778600\arctan\left(\frac{1}{50443911578}\right)-63414860592\arctan\left(\frac{2}{112899039159}\right)+43987783620\arctan\left(\frac{1}{71617196968}\right)+129088360248\arctan\left(\frac{1}{78535779057}\right)+130816309116\arctan\left(\frac{1}{97569070557}\right)+13984990224\arctan\left(\frac{1}{102428655030}\right)-146120812068\arctan\left(\frac{1}{197877956739}\right)-60167878436\arctan\left(\frac{1}{225891903693}\right)+156059866316\arctan\left(\frac{1}{250645741818}\right)+140283609052\arctan\left(\frac{1}{283378114193}\right)+58954820396\arctan\left(\frac{1}{324363564309}\right)-95225631000\arctan\left(\frac{1}{469027618483}\right)+262331439812\arctan\left(\frac{1}{492806748932}\right)+39791236720\arctan\left(\frac{1}{821345641657}\right)+301243562136\arctan\left(\frac{1}{3737240479718}\right)+98466169100\arctan\left(\frac{1}{28148191112477}\right)-152740527708\arctan\left(\frac{1}{55707370528529}\right)+111514589160\arctan\left(\frac{1}{69971515635443}\right)+118214491268\arctan\left(\frac{1}{109805699900318}\right)+147397708752\arctan\left(\frac{1}{7474541196075273}\right)$$