| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 83 |
| 4 | 750 |
| 5 | 6751 |
| 6 | 60759 |
| 7 | 546833 |
| 8 | 4921500 |
| 9 | 44293501 |
| 10 | 398641509 |
| 11 | 3587773583 |
| 12 | 32289962250 |
| 13 | 290609660251 |
| 14 | 2615486942259 |
| 15 | 23539382480333 |
| 16 | 211854442323000 |
| 17 | 1906689980907001 |
[1,9,83,750,6751,60759,546833,4921500,44293501, 398641509,3587773583,32289962250,290609660251, 2615486942259,23539382480333,211854442323000, 1906689980907001] |