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A001530
as a simple table
n
a(n)
0
1
1
1
2
1
3
3
4
9
5
48
6
504
7
14188
8
1351563
[1,1,1,3,9,48,504,14188,1351563]
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Last modified July 15 03:33 EDT 2024. Contains 374324 sequences. (Running on oeis4.)