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A047073 as a simple table

na(n)
01
12
24
34
48
512
624
740
880
9140
10280
11504
121008
131848
143696
156864
1613728
1725740
1851480
1997240
20194480
21369512
22739024
231410864
242821728
255408312
2610816624
2720801200
2841602400
2980233200
30160466400
31310235040
32620470080
331202160780

[1,2,4,4,8,12,24,40,80,140,280,504,1008,1848,3696,
 6864,13728,25740,51480,97240,194480,369512,739024,
 1410864,2821728,5408312,10816624,20801200,
 41602400,80233200,160466400,310235040,620470080,
 1202160780]