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A018550 as a simple table

na(n)
11
22
33
44
56
69
712
817
918
1034
1136
1251
1368
14102
15153
16204
17306
18612

[1,2,3,4,6,9,12,17,18,34,36,51,68,102,153,204,306,
 612]