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A307801
as a simple table
n
a(n)
1
3
2
0
3
0
4
1
5
0
6
0
7
0
8
0
9
4
10
0
11
0
12
2
13
3
14
1
15
0
16
1
17
0
18
0
19
1
20
0
[3,0,0,1,0,0,0,0,4,0,0,2,3,1,0,1,0,0,1,0]