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A069643 as a simple table

na(n)
16
22352
330481920
49958443264000
571274072206937600000
610284003594061010227814400000
728352758990854707972694688215859200000
81439725057274629036644686315831322105348096000000

[6,2352,30481920,9958443264000,
 71274072206937600000,
 10284003594061010227814400000,
 28352758990854707972694688215859200000,
 1439725057274629036644686315831322105348096000000]