SOLUTION: How do you write an expression for a general term of the following sequence? 2,1,3,0,4,-1,5,...

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Question 802483: How do you write an expression for a general term of the following sequence?
2,1,3,0,4,-1,5,...
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
2 -1
1 +2
3 -3
0 +4
4 -5
-1 +6
5
so that
%0D%0Aa%5Bn%5D=a%5Bn-1%5D-%28-1%29%5E%28n-1%29%2A%28n-1%29%0D%0A