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.
Product[Divide[2,1+Power[5,Divide[1,Power[2,k]]]],{k,1,∞}]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
