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| n | a(n) |
|---|---|
| 1 | 22 |
| 2 | 4444 |
| 3 | 224444 |
| 4 | 442244 |
| 5 | 444422 |
| 6 | 666666 |
| 7 | 10123133 |
| 8 | 10123331 |
| 9 | 10143133 |
| 10 | 10143331 |
| 11 | 10153133 |
| 12 | 10153331 |
| 13 | 10163133 |
| 14 | 10163331 |
| 15 | 10173133 |
| 16 | 10173331 |
| 17 | 10183133 |
| 18 | 10183331 |
| 19 | 10193133 |
| 20 | 10193331 |
| 21 | 10212332 |
| 22 | 10213223 |
| 23 | 10232132 |
[22,4444,224444,442244,444422,666666,10123133, 10123331,10143133,10143331,10153133,10153331, 10163133,10163331,10173133,10173331,10183133, 10183331,10193133,10193331,10212332,10213223, 10232132] |