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A230689
as a simple table
n
a(n)
1
0
2
0
3
0
4
32
5
15624
6
2756394
7
296568384
8
24842737670
9
1968730639226
10
156736534647626
[0,0,0,32,15624,2756394,296568384,24842737670, 1968730639226,156736534647626]