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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 71 |
| 3 | 271 |
| 4 | 2711 |
| 5 | 52711 |
| 6 | 5271121 |
| 7 | 135271121 |
| 8 | 1352711219 |
| 9 | 271352711219 |
| 10 | 27135271121911 |
| 11 | 1227135271121911 |
| 12 | 122713527112191161 |
| 13 | 20122713527112191161 |
| 14 | 20122713527112191161109 |
| 15 | 2720122713527112191161109 |
[7,71,271,2711,52711,5271121,135271121,1352711219, 271352711219,27135271121911,1227135271121911, 122713527112191161,20122713527112191161, 20122713527112191161109,2720122713527112191161109] |