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.
(7.64/(3^2/Log[3]*21))(n^2/Log[n])*1/16 (62*n^2-56 n+-4 Cos[(nPi)/2]+21 Cos[nPi]-33) for n = 2
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random