Algodoo

The Van Eck Sequence, also known as Don't Know, is a seemingly chaotic and random sequence which is actually generated with this pseudocode:
Start at 0
If you have never seen the current number before, add a 0
Otherwise calculate how far another copy of the current number is and add that number
repeat forever

If I get 1000 subscribers, then I'll upload another scene.
-Ahyan