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A160606 as a simple table

na(n)
01
11
22
33
424
515
6720
7180
85760
96480
10518400
111425600
1268428800
1327799200
141779148800
156671808000
16426995712000
17907365888000
18130660687872000
19620638267392000
2049651061391360000
219309574010880000
223276970051829760000

[1,1,2,3,24,15,720,180,5760,6480,518400,1425600,
 68428800,27799200,1779148800,6671808000,
 426995712000,907365888000,130660687872000,
 620638267392000,49651061391360000,
 9309574010880000,3276970051829760000]