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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 8 |
| 3 | 57 |
| 4 | 810 |
| 5 | 22619 |
| 6 | 1219719 |
| 7 | 127845270 |
| 8 | 26032342551 |
| 9 | 10293291175885 |
| 10 | 7905921432890001 |
| 11 | 11794027077033857745 |
| 12 | 34172420487154828030022 |
| 13 | 192310322681418948575293174 |
| 14 | 2102041102462630258932750207474 |
[2,8,57,810,22619,1219719,127845270,26032342551, 10293291175885,7905921432890001, 11794027077033857745,34172420487154828030022, 192310322681418948575293174, 2102041102462630258932750207474] |