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A109518 as a simple table

na(n)
11
23
338
4783
522480
6828000
737231704
81977187485
9121098539008
108403438270285
11651608685100000
1255835951178466800
135239593453691293696
14534383614812622168191
1558857325474654519917440

[1,3,38,783,22480,828000,37231704,1977187485,
 121098539008,8403438270285,651608685100000,
 55835951178466800,5239593453691293696,
 534383614812622168191,58857325474654519917440]