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A052738 as a simple table

na(n)
00
10
22
312
4120
51920
640320
71028160
830965760
91077753600
1042551308800
111878484608000
1291686654259200
134902558383923200
14284994551761920000
1517895345882365952000
161207064057173438464000
1787041570211234422784000

[0,0,2,12,120,1920,40320,1028160,30965760,
 1077753600,42551308800,1878484608000,
 91686654259200,4902558383923200,
 284994551761920000,17895345882365952000,
 1207064057173438464000,87041570211234422784000]