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A160505 as a simple table

na(n)
11
23
36
418
536
6180
7360
81080
92160
106480
1112960
1264800
13129600
14388800
15777600
162332800
174665600
1823328000
1946656000
20139968000
21279936000
22839808000
231679616000
248398080000
2516796160000
2650388480000
27100776960000

[1,3,6,18,36,180,360,1080,2160,6480,12960,64800,
 129600,388800,777600,2332800,4665600,23328000,
 46656000,139968000,279936000,839808000,1679616000,
 8398080000,16796160000,50388480000,100776960000]