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A075217
as a simple table
n
a(n)
1
0
2
0
3
0
4
0
5
1
6
22
7
38
8
504
9
1468
10
6945
11
11046
12
115186
13
119496
14
677774
15
2013619
[0,0,0,0,1,22,38,504,1468,6945,11046,115186, 119496,677774,2013619]