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A245067 as a simple table

na(n)
01
12
212
3120
41610
525956
6474012
79475752
8202921290
94587734580
10108376022040
112654745191280
1267043341981980
131737717447946200
1446062204663294000
151245096242017227360
1634239776369652506970
17956050033694583839220

[1,2,12,120,1610,25956,474012,9475752,202921290,
 4587734580,108376022040,2654745191280,
 67043341981980,1737717447946200,46062204663294000,
 1245096242017227360,34239776369652506970,
 956050033694583839220]