Compact formula | 34351141236[121409547033] - 11058993522[154258381841] + 227206024146[202954204459] + 25525833826[218123852367] + 143303585484[223632092120] + 22219027072[250645741818] + 126349629006[261002206018] + 10815599346[269007136889] + 125249335172[390381378057] + 85503479620[548275361132] - 32472264658[656902304557] - 9940386662[1372432573478] + 97796735194[3761284561432] - 28887962366[13078246979509/2] - 22585526934[8589803519307] + 6994611024[10892900268195] + 123665749194[13350602446852] - 145409588626[17780261434697] - 59257237854[38759264489343] + 26633093080[40296281386138] + 73041191872[169838669284032] - 26702268282[342036110675693] - 90904758228[772654028018543] - 152413823198[1948025182233307] |
Lehmer's measure | 1.92758 |
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 MRW on 21 August 2002.] |