There's a series expansion for arbitrary digits of pi (but in hex) that you could sample https://en.m.wikipedia.org/wiki/Bailey%E2%80%93Borwein%E2%80%93Plouffe

There's a series expansion for arbitrary digits of pi (but in hex) that you could sample https://en.m.wikipedia.org/wiki/Bailey%E2%80%93Borwein%E2%80%93Plouffe_formula https://en.m.wikipedia.org/wiki/Bailey%E2%80%93Borwein%E2%80...