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A052604 as a simple table

na(n)
01
11
24
330
4240
52520
632400
7478800
88104320
9154586880
103273177600
1176241088000
121937561472000
1353340660172800
141581414202368000
1550234310846720000
161702089880178688000
1761276407362666496000

[1,1,4,30,240,2520,32400,478800,8104320,154586880,
 3273177600,76241088000,1937561472000,
 53340660172800,1581414202368000,50234310846720000,
 1702089880178688000,61276407362666496000]