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A207062 as a simple table

na(n)
12
216
3102
4720
56398
654684
7468348
84356936
941716708
10403445900
114037337213
1241571957024
13435311467198
144653843868560
1550835606848268
16564791240516000
176378296516533122
1873247208566761530
19853936849893078000

[2,16,102,720,6398,54684,468348,4356936,41716708,
 403445900,4037337213,41571957024,435311467198,
 4653843868560,50835606848268,564791240516000,
 6378296516533122,73247208566761530,
 853936849893078000]