-1927/60(-2)^n+533/3(-1)^n+1364/3(1)^n-3173/12(2)^n+958/15(3)^n, n=5

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.