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A309985
as a simple table
n
a(n)
0
1
1
1
2
3
3
18
4
160
5
2325
6
41895
7
961772
8
26978400
9
929587995
[1,1,3,18,160,2325,41895,961772,26978400, 929587995]
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Last modified April 19 08:08 EDT 2024. Contains 371782 sequences. (Running on oeis4.)
