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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A205978 as a simple table

na(n)
181
21980
327060
4419088
59653376
6338009472
719410499584
81690931386368
9230418338273280
1052219993101631488
1118073632573916545024
129818099537300641382400
138885510832166696098201600

[81,1980,27060,419088,9653376,338009472,
 19410499584,1690931386368,230418338273280,
 52219993101631488,18073632573916545024,
 9818099537300641382400,8885510832166696098201600]