Compact formula | 661770768[295806685] + 323664420[575512868] + 358186016[2309197818] - 38302876[4949475989/2] + 521253004[2674664693] - 86356272[2701984943] + 279427416[4117799011] - 83386620[8818809606] - 192758332[8964659780] + 181055380[19255151581/2] - 873709576[10069383693] + 467841432[14033378718] + 430877248[14722389557] + 363914524[48794637562] + 56330148[219231737743] + 60253300[760662038919/2] + 248534076[10162014009261/2] + 108543132[74796038391693] |
Lehmer's measure | 1.77849 |
References | Wetherfield, Michael Roby and Chien-Lih, Hwang. Computing pi: Lists of Machin-type (inverse cotangent) identities for pi/4, [Online; accessed 04-February-2024], 2013. [web.archive.org/web/20240204042153/http] [Found by Amrik Singh Nimbran on 27 February 2010.] |