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A123899 as a simple table

na(n)
01
12
23
312
460
5360
6252
72016
836288
9362880
104989600
1111975040
12622702080
138717829120
1465383718400
155230697472000
162736057139200
1749249028505600
1830411275102208
19608225502044160
2025545471085854720000

[1,2,3,12,60,360,252,2016,36288,362880,4989600,
 11975040,622702080,8717829120,65383718400,
 5230697472000,2736057139200,49249028505600,
 30411275102208,608225502044160,
 25545471085854720000]