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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 22 |
| 3 | 222 |
| 4 | 22212 |
| 5 | 222220 |
| 6 | 222222 |
| 7 | 21222222 |
| 8 | 222222224 |
| 9 | 222222222 |
| 10 | 22222222220 |
| 11 | 222222222222 |
| 12 | 2222222222220 |
| 13 | 22222122222222 |
| 14 | 222122222222222 |
| 15 | 2222222222222220 |
| 16 | 22222222222222224 |
| 17 | 222202222222222222 |
[2,22,222,22212,222220,222222,21222222,222222224, 222222222,22222222220,222222222222,2222222222220, 22222122222222,222122222222222,2222222222222220, 22222222222222224,222202222222222222] |