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| n | a(n) |
|---|---|
| 1 | 111 |
| 2 | 211 |
| 3 | 111111 |
| 4 | 111211 |
| 5 | 211111 |
| 6 | 211211 |
| 7 | 111111111 |
| 8 | 111111211 |
| 9 | 111211111 |
| 10 | 111211211 |
| 11 | 211111111 |
| 12 | 211111211 |
| 13 | 211211111 |
| 14 | 211211211 |
| 15 | 111111111111 |
| 16 | 111111111111 |
| 17 | 111111111211 |
| 18 | 111111211111 |
| 19 | 111111211211 |
| 20 | 111211111111 |
| 21 | 111211111211 |
[111,211,111111,111211,211111,211211,111111111, 111111211,111211111,111211211,211111111,211111211, 211211111,211211211,111111111111,111111111111, 111111111211,111111211111,111111211211, 111211111111,111211111211] |