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A133939 as a simple table

na(n)
00
11
22
36
440
5440
65952
797104
81888640
942480000
101082119680
1130814080000
12970187827200
1333461288899584
141254539018571776
1550803163905751040
162209862882578300928
17102761280728930287616
185087062588875762696192
19267101579060996713611264

[0,1,2,6,40,440,5952,97104,1888640,42480000,
 1082119680,30814080000,970187827200,
 33461288899584,1254539018571776,50803163905751040,
 2209862882578300928,102761280728930287616,
 5087062588875762696192,267101579060996713611264]