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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 117 |
| 4 | 1665 |
| 5 | 24843 |
| 6 | 380805 |
| 7 | 5941923 |
| 8 | 93886185 |
| 9 | 1497389568 |
| 10 | 24055051863 |
| 11 | 388666882798 |
| 12 | 6309382040993 |
| 13 | 102822842612560 |
| 14 | 1681209772089665 |
| 15 | 27566207388086092 |
| 16 | 453095823002488325 |
| 17 | 7463239601084222332 |
[1,9,117,1665,24843,380805,5941923,93886185, 1497389568,24055051863,388666882798,6309382040993, 102822842612560,1681209772089665, 27566207388086092,453095823002488325, 7463239601084222332] |