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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 211 |
| 3 | 1123 |
| 4 | 2143 |
| 5 | 112543 |
| 6 | 1124653 |
| 7 | 1234657 |
| 8 | 112345687 |
| 9 | 1123465789 |
| 10 | 10123457689 |
| 11 | 10123457689 |
| 12 | 10123457689 |
| 13 | 10123457689 |
| 14 | 10123457689 |
| 15 | 10123457689 |
| 16 | 10123457689 |
| 17 | 10123457689 |
| 18 | 10123457689 |
| 19 | 10123457689 |
[11,211,1123,2143,112543,1124653,1234657, 112345687,1123465789,10123457689,10123457689, 10123457689,10123457689,10123457689,10123457689, 10123457689,10123457689,10123457689,10123457689] |