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A358072 as a simple table

na(n)
11
21
34
428
5320
65360
7123760
83765440
9145951680
107019678400
11410164339200
1228615175635200
132349290700556800
14224201377681881600
1524610071925350912000
163078761402543963136000
17435446399655217606656000

[1,1,4,28,320,5360,123760,3765440,145951680,
 7019678400,410164339200,28615175635200,
 2349290700556800,224201377681881600,
 24610071925350912000,3078761402543963136000,
 435446399655217606656000]