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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 51 |
| 3 | 589 |
| 4 | 5106 |
| 5 | 41288 |
| 6 | 397219 |
| 7 | 3745096 |
| 8 | 34036486 |
| 9 | 313782748 |
| 10 | 2927905037 |
| 11 | 27164864918 |
| 12 | 251564198963 |
| 13 | 2335778916642 |
| 14 | 21695352159535 |
| 15 | 201366887006680 |
| 16 | 1869228803618176 |
| 17 | 17356005419910937 |
| 18 | 161143681489604094 |
[9,51,589,5106,41288,397219,3745096,34036486, 313782748,2927905037,27164864918,251564198963, 2335778916642,21695352159535,201366887006680, 1869228803618176,17356005419910937, 161143681489604094] |