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A163231 as a simple table

na(n)
01
145
21980
387120
43832290
5168577200
67415481150
7326196882000
814348955088710
9631190926398780
1027765226324720170
111221354364616557380
1253725709508796162530
132363320544672336677560
14103959241263364038810390

[1,45,1980,87120,3832290,168577200,7415481150,
 326196882000,14348955088710,631190926398780,
 27765226324720170,1221354364616557380,
 53725709508796162530,2363320544672336677560,
 103959241263364038810390]