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A075352 as a simple table

na(n)
11
22
312
430
5504
61320
743680
8116280
96375600
1017100720
111402410240
123776965920
138835488640
141022755734000
152478652606080
16380634949094400
17945378254620800
18186127248627129600
19470489622136934400
20115590003914312928000

[1,2,12,30,504,1320,43680,116280,6375600,17100720,
 1402410240,3776965920,8835488640,1022755734000,
 2478652606080,380634949094400,945378254620800,
 186127248627129600,470489622136934400,
 115590003914312928000]