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A307383
as a simple table
n
a(n)
0
1
-1
3
-2
0
-3
4
-4
5
-5
6
-6
2
-7
5
-8
9
-9
8
-10
3
-11
5
[1,3,0,4,5,6,2,5,9,8,3,5]
