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A152255
as a simple table
n
a(n)
0
0
1
0
2
0
3
1
4
1
5
2
6
2
7
3
8
7
9
15
10
12
11
30
12
8
13
32
14
162
15
21
[0,0,0,1,1,2,2,3,7,15,12,30,8,32,162,21]