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A067668 as a simple table

na(n)
12
24480
36829776306569216000000
4476828881356392543041592797163461605193984896811956028519492400892855796105719316480000000000000000000

[2,4480,6829776306569216000000,
 47682888135639254304159279716346160519398489681195\
 60285194924008928557961057193164800000000000000000\
 00]