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A160622 as a simple table

na(n)
01
11
22
33
48
515
6144
7420
85760
94536
10403200
111995840
126220800
13259459200
141341204480
1546702656000
161394852659200
1711115232128000
18376610217984000
1996543730483200
20128047474114560000
211277273554292736000

[1,1,2,3,8,15,144,420,5760,4536,403200,1995840,
 6220800,259459200,1341204480,46702656000,
 1394852659200,11115232128000,376610217984000,
 96543730483200,128047474114560000,
 1277273554292736000]