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A066557 as a simple table
| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 98 |
| 3 | 999 |
| 4 | 9996 |
| 5 | 99995 |
| 6 | 999996 |
| 7 | 9999997 |
| 8 | 99999992 |
| 9 | 999999999 |
| 10 | 9999999990 |
| 11 | 99999999990 |
| 12 | 999999999996 |
| 13 | 9999999999990 |
| 14 | 99999999999998 |
| 15 | 999999999999990 |
| 16 | 9999999999999984 |
| 17 | 99999999999999990 |
| 18 | 999999999999999990 |
| 19 | 9999999999999999990 |
| 20 | 99999999999999999980 |
[9,98,999,9996,99995,999996,9999997,99999992, 999999999,9999999990,99999999990,999999999996, 9999999999990,99999999999998,999999999999990, 9999999999999984,99999999999999990, 999999999999999990,9999999999999999990, 99999999999999999980] |