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A089709 as a simple table

n a(n)
1 1
2 2
3 6
4 36
5 360
6 6480
7 220320
8 14541120
9 1890345600
10 487709164800
11 250682510707200
12 257200255985587200
13 527260524770453760000
14 2160713630509319508480000
15 17704887488393364052485120000

[1,2,6,36,360,6480,220320,14541120,1890345600,
 487709164800,250682510707200,257200255985587200,
 527260524770453760000,2160713630509319508480000,
 17704887488393364052485120000]

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Last modified September 19 08:05 EDT 2021. Contains 347556 sequences. (Running on oeis4.)