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 i = 2 to 3, S2(4, i) * C(3-2,i-2) * i!
(sum i = 2 to 3, S2(4, i) * C(3-2,i-2) * i!
Natural Language
Math Input
Extended Keyboard
