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A129554
as a simple table
n
a(n)
1
0
2
0
3
0
4
0
5
0
6
0
7
0
8
1
9
6
10
66
11
751
12
9737
13
131672
14
1708295
[0,0,0,0,0,0,0,1,6,66,751,9737,131672,1708295]
