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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 23 |
| 3 | 235 |
| 4 | 2357 |
| 5 | 112357 |
| 6 | 112357 |
| 7 | 112357 |
| 8 | 1123579 |
| 9 | 1123579 |
| 10 | 1123579 |
| 11 | 1231579 |
| 12 | 1231579 |
| 13 | 12341579 |
| 14 | 12431579 |
| 15 | 12431579 |
| 16 | 12453179 |
| 17 | 12453179 |
| 18 | 124536179 |
| 19 | 124536179 |
| 20 | 1124536719 |
| 21 | 1234567139 |
| 22 | 1234567139 |
| 23 | 12345671839 |
| 24 | 12345671839 |
| 25 | 12456783197 |
| 26 | 102456783197 |
| 27 | 102456783197 |
| 28 | 102456783197 |
[2,23,235,2357,112357,112357,112357,1123579, 1123579,1123579,1231579,1231579,12341579,12431579, 12431579,12453179,12453179,124536179,124536179, 1124536719,1234567139,1234567139,12345671839, 12345671839,12456783197,102456783197,102456783197, 102456783197] |