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A003773 as a simple table

na(n)
116
23456
3686000
4135834624
526894628304
65325000912000
71054323287943536
8208750686023540736
941331581509440922000
108183444388183674181504
111620280657278860350213424
12320807386696826179092096000

[16,3456,686000,135834624,26894628304,
 5325000912000,1054323287943536,208750686023540736,
 41331581509440922000,8183444388183674181504,
 1620280657278860350213424,
 320807386696826179092096000]