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A140048 as a simple table

n a(n)
1 1
2 3
3 70
4 7200
5 3098760
6 5461682688
7 39119789090720
8 1134989202339225600
9 133147573896710665570432
10 63073498348368958240316325888
11 120514654247860687784734309977868800

[1,3,70,7200,3098760,5461682688,39119789090720,
 1134989202339225600,133147573896710665570432,
 63073498348368958240316325888,
 120514654247860687784734309977868800]

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Last modified February 4 05:49 EST 2023. Contains 360046 sequences. (Running on oeis4.)