SOLUTION: Which should come next at the end of this series of numbers: 1, 2, 0, 3, -1?

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Question 849838: Which should come next at the end of this series of numbers: 1, 2, 0, 3, -1?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Looks like +1, -2, +3, -4, +5, -6, ...
+1%2B1=2+
2-2=0
0%2B3=3
3-4=-1
-1%2B5=highlight%284%29
4-6=highlight%28-2%29