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A062143 as a simple table

na(n)
01
140
21080
325200
4554400
511975040
6259459200
75708102400
8128432304000
92968213248000
1070643475302400
111733976211968000
1243927397369856000
131148870392750080000
1431019500604252160000
15864410083505160192000

[1,40,1080,25200,554400,11975040,259459200,
 5708102400,128432304000,2968213248000,
 70643475302400,1733976211968000,43927397369856000,
 1148870392750080000,31019500604252160000,
 864410083505160192000]