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A142984 as a simple table

na(n)
11
24
322
4136
5984
68016
773392
8742464
98254080
1099838080
111307301120
1218407831040
13277570298880
144460506444800
1576131788544000
161375048700928000
1726208041287680000
18525597067634688000
1911065538390925312000

[1,4,22,136,984,8016,73392,742464,8254080,
 99838080,1307301120,18407831040,277570298880,
 4460506444800,76131788544000,1375048700928000,
 26208041287680000,525597067634688000,
 11065538390925312000]