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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 12 |
| 3 | 1210 |
| 4 | 121011 |
| 5 | 12101112 |
| 6 | 1210111220 |
| 7 | 121011122021 |
| 8 | 12101112202122 |
| 9 | 12101112202122100 |
| 10 | 12101112202122100101 |
| 11 | 12101112202122100101102 |
| 12 | 12101112202122100101102110 |
| 13 | 12101112202122100101102110111 |
| 14 | 12101112202122100101102110111112 |
| 15 | 12101112202122100101102110111112120 |
[1,12,1210,121011,12101112,1210111220, 121011122021,12101112202122,12101112202122100, 12101112202122100101,12101112202122100101102, 12101112202122100101102110, 12101112202122100101102110111, 12101112202122100101102110111112, 12101112202122100101102110111112120] |