Tally[{0,0,0,0,1,1,1,1,1,2,2,2,2,2,2,3,3,3,4,4,4,5}]

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.