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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 98 |
| 3 | 573 |
| 4 | 3932 |
| 5 | 27396 |
| 6 | 187787 |
| 7 | 1281418 |
| 8 | 8817196 |
| 9 | 60491511 |
| 10 | 414940896 |
| 11 | 2848205472 |
| 12 | 19543560677 |
| 13 | 134109690174 |
| 14 | 920301435092 |
| 15 | 6315269717345 |
| 16 | 43336595756322 |
| 17 | 297384592540278 |
| 18 | 2040711880508497 |
| 19 | 14003768336412308 |
[8,98,573,3932,27396,187787,1281418,8817196, 60491511,414940896,2848205472,19543560677, 134109690174,920301435092,6315269717345, 43336595756322,297384592540278,2040711880508497, 14003768336412308] |