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A208357 as a simple table

na(n)
14
264
31764
468644
53341584
6190992400
712310790116
8871343837764
966469126179600
105391179227622500
11460213149486493456
1241024422751464102500
133795407861954983718544
14362631040029370613957184
1535638591665642822414493156
163590789985613539065908070116
17369893506453438150061450367376

[4,64,1764,68644,3341584,190992400,12310790116,
 871343837764,66469126179600,5391179227622500,
 460213149486493456,41024422751464102500,
 3795407861954983718544,362631040029370613957184,
 35638591665642822414493156,
 3590789985613539065908070116,
 369893506453438150061450367376]