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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 96 |
| 3 | 623 |
| 4 | 3736 |
| 5 | 24908 |
| 6 | 163505 |
| 7 | 1056337 |
| 8 | 6877345 |
| 9 | 44814952 |
| 10 | 291509085 |
| 11 | 1896866692 |
| 12 | 12346072740 |
| 13 | 80344855605 |
| 14 | 522859320079 |
| 15 | 3402709450301 |
| 16 | 22144272437752 |
| 17 | 144110748923323 |
| 18 | 937848095118780 |
| 19 | 6103354462609448 |
[9,96,623,3736,24908,163505,1056337,6877345, 44814952,291509085,1896866692,12346072740, 80344855605,522859320079,3402709450301, 22144272437752,144110748923323,937848095118780, 6103354462609448] |