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A372171
as a simple table
n
a(n)
0
0
1
0
2
0
3
1
4
12
5
220
6
5460
7
191975
8
9596160
9
683389812
10
69270116040
[0,0,0,1,12,220,5460,191975,9596160,683389812, 69270116040]
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Last modified August 14 21:59 EDT 2024. Contains 375167 sequences. (Running on oeis4.)