| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 105 |
| 3 | 772 |
| 4 | 5922 |
| 5 | 45717 |
| 6 | 353229 |
| 7 | 2727755 |
| 8 | 21069318 |
| 9 | 162753849 |
| 10 | 1257225302 |
| 11 | 9711792270 |
| 12 | 75021745843 |
| 13 | 579529894725 |
| 14 | 4476770505137 |
| 15 | 34582309009590 |
| 16 | 267142643360807 |
| 17 | 2063633101348406 |
| 18 | 15941227812038514 |
| 19 | 123143376763267969 |
[8,105,772,5922,45717,353229,2727755,21069318, 162753849,1257225302,9711792270,75021745843, 579529894725,4476770505137,34582309009590, 267142643360807,2063633101348406, 15941227812038514,123143376763267969] |