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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 17 |
| 3 | 241 |
| 4 | 3361 |
| 5 | 46817 |
| 6 | 652081 |
| 7 | 9082321 |
| 8 | 126500417 |
| 9 | 1761923521 |
| 10 | 24540428881 |
| 11 | 341804080817 |
| 12 | 4760716702561 |
| 13 | 66308229755041 |
| 14 | 923554499868017 |
| 15 | 12863454768397201 |
| 16 | 179164812257692801 |
| 17 | 2495443916839302017 |
| 18 | 34757050023492535441 |
| 19 | 484103256412056194161 |
[1,17,241,3361,46817,652081,9082321,126500417, 1761923521,24540428881,341804080817,4760716702561, 66308229755041,923554499868017,12863454768397201, 179164812257692801,2495443916839302017, 34757050023492535441,484103256412056194161] |