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A001814 as a simple table

na(n)
11
212
3180
43360
575600
61995840
760540480
82075673600
979394515200
103352212864000
11154872234316800
127771770303897600
13420970891461120000
1424481076457277440000
151521324036987955200000
16100610229646136770560000

[1,12,180,3360,75600,1995840,60540480,2075673600,
 79394515200,3352212864000,154872234316800,
 7771770303897600,420970891461120000,
 24481076457277440000,1521324036987955200000,
 100610229646136770560000]