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A058255 as a simple table

na(n)
11
22
34
412
560
6240
7720
87920
955440
101275120
1116576560
12480720240
1319709529840
1439419059680
15197095298400
163350620072800
17177582863858400
18532748591575200
1919711697888282400
2059135093664847200

[1,2,4,12,60,240,720,7920,55440,1275120,16576560,
 480720240,19709529840,39419059680,197095298400,
 3350620072800,177582863858400,532748591575200,
 19711697888282400,59135093664847200]