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A198089
as a simple table
n
a(n)
1
1
2
2
3
5
4
33
5
228
6
3088
7
57920
8
1692421
9
89966033
10
7774886220
[1,2,5,33,228,3088,57920,1692421,89966033, 7774886220]
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Last modified April 24 19:06 EDT 2024. Contains 371962 sequences. (Running on oeis4.)