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A074166 as a simple table

na(n)
11
22
36
424
5120
6720
75040
840320
9362880
103991680
1187816960
122897959680
13127510225920
147013062425600
15462862120089600
1635640383246899200
173136353725727129600
18310499018846985830400
1931360400903545568870400

[1,2,6,24,120,720,5040,40320,362880,3991680,
 87816960,2897959680,127510225920,7013062425600,
 462862120089600,35640383246899200,
 3136353725727129600,310499018846985830400,
 31360400903545568870400]