1/3 sum_n=0^200( 405^(-n) Γ(1 + 5 n))/(n! Γ(2 + 4 n))

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.