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A080951 as a simple table

na(n)
01
15
230
3140
4560
52016
66720
721120
863360
9183040
10512512
111397760
123727360
139748480
1425067520
1563504384
16158760960
17392232960
18958791680
192321285120
205571084288
2113264486400
2231352422400
2373610035200
24171756748800

[1,5,30,140,560,2016,6720,21120,63360,183040,
 512512,1397760,3727360,9748480,25067520,63504384,
 158760960,392232960,958791680,2321285120,
 5571084288,13264486400,31352422400,73610035200,
 171756748800]