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A107270 as a simple table

n a(n)
0 1
1 1
2 2
3 8
4 72
5 1440
6 55008
7 3507840
8 342679680
9 48401625600
10 9472057781760
11 2484361405532160
12 850218223244544000
13 371335242657899520000
14 203148791342840318976000
15 137006974339300359770112000

[1,1,2,8,72,1440,55008,3507840,342679680,
 48401625600,9472057781760,2484361405532160,
 850218223244544000,371335242657899520000,
 203148791342840318976000,
 137006974339300359770112000]

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Last modified May 28 04:02 EDT 2022. Contains 354112 sequences. (Running on oeis4.)