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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 12 |
| 3 | 123 |
| 4 | 1235 |
| 5 | 12357 |
| 6 | 1235711 |
| 7 | 123571115 |
| 8 | 12357111522 |
| 9 | 1235711152230 |
| 10 | 123571115223042 |
| 11 | 12357111522304256 |
| 12 | 1235711152230425677 |
| 13 | 1235711152230425677101 |
| 14 | 1235711152230425677101135 |
[1,12,123,1235,12357,1235711,123571115, 12357111522,1235711152230,123571115223042, 12357111522304256,1235711152230425677, 1235711152230425677101,1235711152230425677101135] |