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A052845 as a simple table

na(n)
01
10
22
36
436
5240
61920
717640
8183120
92116800
1026943840
11374220000
125628934080
1391122071040
141579034096640
1529155689763200
16571308920582400
1711838533804697600
18258608278645516800
195938673374272038400
20143003892952893772800
213602735624977961472000

[1,0,2,6,36,240,1920,17640,183120,2116800,
 26943840,374220000,5628934080,91122071040,
 1579034096640,29155689763200,571308920582400,
 11838533804697600,258608278645516800,
 5938673374272038400,143003892952893772800,
 3602735624977961472000]