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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 99 |
| 3 | 996 |
| 4 | 9996 |
| 5 | 99990 |
| 6 | 999570 |
| 7 | 9999990 |
| 8 | 99981420 |
| 9 | 999068070 |
| 10 | 9592993410 |
[9,99,996,9996,99990,999570,9999990,99981420, 999068070,9592993410] |