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A121356 as a simple table

na(n)
11
22
324
4192
5600
615840
7211680
81612800
943545600
10961632000
1111416204800
12365957222400
1310766518963200
14191617884057600
156758061133824000
16254086360399872000
176058779650187264000
18241382293453357056000

[1,2,24,192,600,15840,211680,1612800,43545600,
 961632000,11416204800,365957222400,10766518963200,
 191617884057600,6758061133824000,
 254086360399872000,6058779650187264000,
 241382293453357056000]