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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 111213 |
| 5 | 412223 |
| 6 | 51423314 |
| 7 | 7152433415 |
| 8 | 515253543517 |
| 9 | 613263548527 |
| 10 | 5142634495263718 |
| 11 | 515263549546372819 |
| 12 | 516263648566373839 |
| 13 | 515283648596374849 |
| 14 | 414283649596376859 |
| 15 | 3132837475106377869 |
| 16 | 10413283746576677869 |
| 17 | 20513283644596976859 |
| 18 | 30514283545596976859 |
[1,2,3,111213,412223,51423314,7152433415, 515253543517,613263548527,5142634495263718, 515263549546372819,516263648566373839, 515283648596374849,414283649596376859, 3132837475106377869,10413283746576677869, 20513283644596976859,30514283545596976859] |