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A122748 as a simple table

na(n)
01
11
22
32
44
58
616
740
872
9260
10432
111976
122880
1317632
1423040
15177248
16201600
172001680
182016000
1924879520
2021772800
21338969216
22261273600
235002865792
243353011200
2579676972608
2646942156800
271358997441920
28697426329600
2924740358817280
3011158821273600
31478218277674496

[1,1,2,2,4,8,16,40,72,260,432,1976,2880,17632,
 23040,177248,201600,2001680,2016000,24879520,
 21772800,338969216,261273600,5002865792,
 3353011200,79676972608,46942156800,1358997441920,
 697426329600,24740358817280,11158821273600,
 478218277674496]