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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 10 |
| 3 | 100 |
| 4 | 1000 |
| 5 | 10000 |
| 6 | 100000 |
| 7 | 1000000 |
| 8 | 10000000 |
| 9 | 100000000 |
| 10 | 1000000000 |
| 11 | 10000000000 |
| 12 | 100000000000 |
| 13 | 1000000000000 |
| 14 | 1111111111111 |
| 15 | 11111111111110 |
| 16 | 111111111111100 |
| 17 | 1111111111111000 |
| 18 | 11111111111110000 |
[1,10,100,1000,10000,100000,1000000,10000000, 100000000,1000000000,10000000000,100000000000, 1000000000000,1111111111111,11111111111110, 111111111111100,1111111111111000, 11111111111110000] |