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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 41 |
| 3 | 241 |
| 4 | 2411 |
| 5 | 32411 |
| 6 | 324113 |
| 7 | 6324113 |
| 8 | 63241133 |
| 9 | 1563241133 |
| 10 | 15632411339 |
| 11 | 815632411339 |
| 12 | 81563241133909 |
| 13 | 1981563241133909 |
| 14 | 198156324113390947 |
| 15 | 24198156324113390947 |
| 16 | 2419815632411339094781 |
| 17 | 212419815632411339094781 |
[4,41,241,2411,32411,324113,6324113,63241133, 1563241133,15632411339,815632411339, 81563241133909,1981563241133909, 198156324113390947,24198156324113390947, 2419815632411339094781,212419815632411339094781] |