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A122693 as a simple table

na(n)
00
12
24
332
4128
51152
66912
773728
8589824
97372800
1073728000
111061683200
1212740198400
13208089907200
142913258700800
1553271016243200
16852336259891200
1717259809262796800
18310676566730342400
196903923705118720000
20138078474102374400000
213341499073277460480000

[0,2,4,32,128,1152,6912,73728,589824,7372800,
 73728000,1061683200,12740198400,208089907200,
 2913258700800,53271016243200,852336259891200,
 17259809262796800,310676566730342400,
 6903923705118720000,138078474102374400000,
 3341499073277460480000]