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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 212 |
| 3 | 42124 |
| 4 | 204212402 |
| 5 | 2220421240222 |
| 6 | 222204212402222 |
| 7 | 2222220421240222222 |
| 8 | 12222222042124022222221 |
| 9 | 3122222220421240222222213 |
| 10 | 331222222204212402222222133 |
| 11 | 53312222222042124022222221335 |
| 12 | 165331222222204212402222222133561 |
[1,212,42124,204212402,2220421240222, 222204212402222,2222220421240222222, 12222222042124022222221,3122222220421240222222213, 331222222204212402222222133, 53312222222042124022222221335, 165331222222204212402222222133561] |