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A081148
as a simple table
n
a(n)
0
1
1
1
2
0
3
1
4
0
5
4
6
0
7
9
8
0
9
24
10
0
11
62
12
0
13
162
14
0
15
447
16
0
17
1234
18
0
[1,1,0,1,0,4,0,9,0,24,0,62,0,162,0,447,0,1234,0]