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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 11 |
| 4 | 21 |
| 5 | 112 |
| 6 | 211 |
| 7 | 1121 |
| 8 | 2111 |
| 9 | 11212 |
| 10 | 21112 |
| 11 | 112121 |
| 12 | 211121 |
| 13 | 1121211 |
| 14 | 2111211 |
| 15 | 11212112 |
| 16 | 21112111 |
| 17 | 112121122 |
| 18 | 211121111 |
| 19 | 1121211221 |
| 20 | 2111211111 |
[1,2,11,21,112,211,1121,2111,11212,21112,112121, 211121,1121211,2111211,11212112,21112111, 112121122,211121111,1121211221,2111211111] |