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.
sum (10k+5)/((k+1)!*2^k), k=1..(n-1)
sum (10k+5)/((k+1)!*2^k), k=1..(n-1)
Natural Language
Math Input
Extended Keyboard
