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A238200
as a simple table
n
a(n)
1
1
0
0
-1
0
-2
1
-3
1
-4
5
-5
9
-6
6
-7
5
-8
2
-9
1
-10
8
[1,0,0,1,1,5,9,6,5,2,1,8]