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A086940 as a simple table

na(n)
116
2196
31996
419996
5199996
61999996
719999996
8199999996
91999999996
1019999999996
11199999999996
121999999999996
1319999999999996
14199999999999996
151999999999999996
1619999999999999996
17199999999999999996
181999999999999999996
1919999999999999999996

[16,196,1996,19996,199996,1999996,19999996,
 199999996,1999999996,19999999996,199999999996,
 1999999999996,19999999999996,199999999999996,
 1999999999999996,19999999999999996,
 199999999999999996,1999999999999999996,
 19999999999999999996]