Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
s={1,3,5,7} sum[(-1)^n/(6n 1)^s (-1)^n/(6n 5)^s, {n,0,infty}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random