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A290820
as a simple table
n
a(n)
1
1
2
0
3
0
4
2
5
0
6
3
7
4
8
4
9
6
10
5
11
8
12
6
13
6
14
7
15
8
16
7
[1,0,0,2,0,3,4,4,6,5,8,6,6,7,8,7]