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A268152 as a simple table

na(n)
00
18
28832
31228800
479364096
53562536960
6129276837888
74079413624832
8116608362086400
93096396542509056
1077661255048888320
111861218099127123968
1242980384518787039232
13962362945373732864000
1420993511648589057622016
15447858123072052742062080
169371462498278516088373248

[0,8,8832,1228800,79364096,3562536960,
 129276837888,4079413624832,116608362086400,
 3096396542509056,77661255048888320,
 1861218099127123968,42980384518787039232,
 962362945373732864000,20993511648589057622016,
 447858123072052742062080,
 9371462498278516088373248]