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A290769
as a simple table
n
a(n)
2
3
3
13
4
168
5
2844
6
194751
7
14062789
8
3852814320
9
1039212524160
[3,13,168,2844,194751,14062789,3852814320, 1039212524160]
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Last modified March 28 17:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)