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A338550 as a simple table

na(n)
01
11
24
360
43360
5705600
6558835200
71678182105600
819198403288064000
9840083731079104512000
10141100463472046393835520000
1191242050302344912388163665920000
12227753296409896438988240405704212480000
132199573010737856838816729366169572868096000000
1482356764599728553816070191604819734458909327360000000

[1,1,4,60,3360,705600,558835200,1678182105600,
 19198403288064000,840083731079104512000,
 141100463472046393835520000,
 91242050302344912388163665920000,
 227753296409896438988240405704212480000,
 2199573010737856838816729366169572868096000000,
 82356764599728553816070191604819734458909327360000\
 000]