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A337941 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1011
1112
1215
1324
141111111111111111111
1511111111111111111111111

[1,2,3,4,5,6,7,8,9,11,12,15,24,
 1111111111111111111,11111111111111111111111]