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A274303 as a simple table

na(n)
08
124
27680
364
43715891200
5194641920
61428329123020800
7160
81678343852714360832000
9637770664031457116160000
104714400748520531002654720000
112602349213183333113465405440000
1227064431817106664380040216576000000

[8,24,7680,64,3715891200,194641920,
 1428329123020800,160,1678343852714360832000,
 637770664031457116160000,
 4714400748520531002654720000,
 2602349213183333113465405440000,
 27064431817106664380040216576000000]