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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 10 |
| 3 | 102 |
| 4 | 120 |
| 5 | 201 |
| 6 | 210 |
| 7 | 1203 |
| 8 | 1302 |
| 9 | 2013 |
| 10 | 2031 |
| 11 | 2103 |
| 12 | 2130 |
| 13 | 3012 |
| 14 | 3021 |
| 15 | 3102 |
| 16 | 3120 |
| 17 | 12034 |
| 18 | 12043 |
| 19 | 20314 |
| 20 | 20413 |
| 21 | 21304 |
| 22 | 21403 |
| 23 | 30214 |
| 24 | 30412 |
| 25 | 31204 |
| 26 | 31402 |
| 27 | 34012 |
| 28 | 34120 |
| 29 | 40213 |
| 30 | 40312 |
| 31 | 41203 |
| 32 | 41302 |
| 33 | 43012 |
| 34 | 43120 |
| 35 | 120345 |
| 36 | 120543 |
| 37 | 203145 |
| 38 | 203154 |
| 39 | 204153 |
[0,10,102,120,201,210,1203,1302,2013,2031,2103, 2130,3012,3021,3102,3120,12034,12043,20314,20413, 21304,21403,30214,30412,31204,31402,34012,34120, 40213,40312,41203,41302,43012,43120,120345,120543, 203145,203154,204153] |