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A320758 as a simple table

n a(n)
2 1
3 6
4 42
5 330
6 2970
7 30240
8 345240
9 4377240
10 61122600
11 933055200
12 15470254800
13 277005128400
14 5329454130000
15 109681187616000
16 2404894892400000
17 55977698400624000
18 1378748676601296000
19 35829233832135744000
20 979763376201049440000
21 28124715476056399200000

[1,6,42,330,2970,30240,345240,4377240,61122600,
 933055200,15470254800,277005128400,5329454130000,
 109681187616000,2404894892400000,
 55977698400624000,1378748676601296000,
 35829233832135744000,979763376201049440000,
 28124715476056399200000]

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Last modified May 21 19:35 EDT 2024. Contains 372738 sequences. (Running on oeis4.)