String Theorists Accidentally Find a New Formula for Pi – Scientific American

[rbanffy]

https://www.scientificamerican.com/article/string-theorists-accidentally-find-a-new-formula-for-pi/

[mensetmanusman]

A plot of convergence rate versus lambda would be interesting. Wonder if there is some particular value that results in the fastest convergence.

[samstave]

This is a better version of a PI song: HARD 'N Phirm.

https://www.youtube.com/watch?v=XanjZw5hPvE

[waldrews]

Just use 3.