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A305571
as a simple table
n
a(n)
1
1
2
0
3
0
4
48
5
480
6
0
7
1290240
8
25484820480
9
34482663290880
[1,0,0,48,480,0,1290240,25484820480, 34482663290880]
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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)