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A134437 as a simple table

n a(n)
1 0
2 1
3 7
4 45
5 312
6 2400
7 20520
8 194040
9 2016000
10 22861440
11 281232000
12 3732220800
13 53169177600
14 809512704000
15 13120332825600
16 225573828480000
17 4100866818048000
18 78606921609216000

[0,1,7,45,312,2400,20520,194040,2016000,22861440,
 281232000,3732220800,53169177600,809512704000,
 13120332825600,225573828480000,4100866818048000,
 78606921609216000]

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Last modified January 22 13:47 EST 2021. Contains 340362 sequences. (Running on oeis4.)