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A089709 as a simple table

na(n)
11
22
36
436
5360
66480
7220320
814541120
91890345600
10487709164800
11250682510707200
12257200255985587200
13527260524770453760000
142160713630509319508480000
1517704887488393364052485120000

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