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A068775
as a simple table
n
a(n)
1
0
2
0
3
0
4
8
5
40
6
240
7
1120
8
4480
9
17280
10
65280
[0,0,0,8,40,240,1120,4480,17280,65280]
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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)