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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 23 |
| 3 | 235 |
| 4 | 2357 |
| 5 | 112357 |
| 6 | 113257 |
| 7 | 1131725 |
| 8 | 113171925 |
| 9 | 1131719235 |
| 10 | 113171923295 |
| 11 | 113171923295 |
| 12 | 1131719237295 |
| 13 | 11317237294195 |
| 14 | 1131723294194375 |
| 15 | 113172329419437475 |
| 16 | 1131723294194347537 |
| 17 | 113172329419434753759 |
[2,23,235,2357,112357,113257,1131725,113171925, 1131719235,113171923295,113171923295, 1131719237295,11317237294195,1131723294194375, 113172329419437475,1131723294194347537, 113172329419434753759] |