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A028668 as a simple table

na(n)
01
130
237800
31755432000
42946176634240000
5178121125423535616000000
6387722609071165087097978880000000
730383449623465746081582327522446540800000000

[1,30,37800,1755432000,2946176634240000,
 178121125423535616000000,
 387722609071165087097978880000000,
 30383449623465746081582327522446540800000000]