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A318436
as a simple table
n
a(n)
21
1
20
3
19
2
18
7
17
1
16
2
15
4
14
4
13
0
12
0
11
0
10
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
[1,3,2,7,1,2,4,4,0,0,0,0,0,0,0,0,0,0,0,0,0]