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A018399 as a simple table

na(n)
11
22
33
44
56
67
78
812
914
1016
1121
1224
1328
1442
1548
1656
1784
18112
19168
20336

[1,2,3,4,6,7,8,12,14,16,21,24,28,42,48,56,84,112,
 168,336]