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

A123257 as a simple table

na(n)
12
26
3100
49261000
5103306896
616274381169926880
798925457477919384169000000
88078021071852487276180833326494285813758890000000
920381485968895666256747501044033896769440000

[2,6,100,9261000,103306896,16274381169926880,
 98925457477919384169000000,
 8078021071852487276180833326494285813758890000000,
 20381485968895666256747501044033896769440000]