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

A374464 as a simple table

na(n)
11
22
33
46
540
6120
7351
8702
91000
103000
1114040
12351000

[1,2,3,6,40,120,351,702,1000,3000,14040,351000]