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A012161 as a simple table

na(n)
01
12
224
3720
448000
54896000
6804480000
7175037491200
853010886656000
919962353688576000
109637819435745280000
115576675932580413440000
123929711821948633743360000
133235566861687414718464000000

[1,2,24,720,48000,4896000,804480000,175037491200,
 53010886656000,19962353688576000,
 9637819435745280000,5576675932580413440000,
 3929711821948633743360000,
 3235566861687414718464000000]