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A078221 as a simple table

na(n)
11
23
39
499
59999
699999999
79999999999999999
899999999999999999999999999999999
99999999999999999999999999999999999999999999999999999999999999999

[1,3,9,99,9999,99999999,9999999999999999,
 99999999999999999999999999999999,
 99999999999999999999999999999999999999999999999999\
 99999999999999]