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A198050
as a simple table
n
a(n)
1
1
2
4
3
21
4
268
5
5693
6
304842
7
29792961
8
5250711122
9
2139491424754
[1,4,21,268,5693,304842,29792961,5250711122, 2139491424754]
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Last modified August 21 21:14 EDT 2024. Contains 375353 sequences. (Running on oeis4.)