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.
analyze the sequence (n+1)(H(n+1)-1/3)/3 -1/2, H is Harmonic series
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random