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| n | a(n) |
|---|---|
| 1 | 210 |
| 2 | 2100 |
| 3 | 2110 |
| 4 | 2210 |
| 5 | 21000 |
| 6 | 21100 |
| 7 | 21110 |
| 8 | 22100 |
| 9 | 22110 |
| 10 | 22210 |
| 11 | 210000 |
| 12 | 210210 |
| 13 | 211000 |
| 14 | 211100 |
| 15 | 211110 |
| 16 | 221000 |
| 17 | 221100 |
| 18 | 221110 |
| 19 | 222100 |
| 20 | 222110 |
| 21 | 222210 |
| 22 | 2100000 |
| 23 | 2100210 |
| 24 | 2102100 |
| 25 | 2102110 |
| 26 | 2102210 |
| 27 | 2110000 |
| 28 | 2110210 |
| 29 | 2111000 |
| 30 | 2111100 |
| 31 | 2111110 |
| 32 | 2210000 |
[210,2100,2110,2210,21000,21100,21110,22100,22110, 22210,210000,210210,211000,211100,211110,221000, 221100,221110,222100,222110,222210,2100000, 2100210,2102100,2102110,2102210,2110000,2110210, 2111000,2111100,2111110,2210000] |