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A198809 as a simple table

na(n)
01
139916800
2548828480360160000
323934366266775567482880000000
41746930746117010628955362040959500000000
5170878335353097656943918169452451079403744627916800
620193738534370392855946567010492898163504440783192016158720000

[1,39916800,548828480360160000,
 23934366266775567482880000000,
 1746930746117010628955362040959500000000,
 17087833535309765694391816945245107940374462791680\
 0,
 20193738534370392855946567010492898163504440783192\
 016158720000]