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A207158
as a simple table
n
a(n)
1
1
2
7
3
18
4
83
5
883
6
8004
7
137386
8
3684780
9
120845236
10
6910251668
[1,7,18,83,883,8004,137386,3684780,120845236, 6910251668]
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Last modified March 26 17:05 EDT 2023. Contains 361551 sequences. (Running on oeis4.)