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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 10 |
| 3 | 49 |
| 4 | 367 |
| 5 | 3850 |
| 6 | 52173 |
| 7 | 868614 |
| 8 | 17199370 |
| 9 | 395757887 |
| 10 | 10396896795 |
| 11 | 307511681367 |
| 12 | 10124396776169 |
| 13 | 367567456615441 |
| 14 | 14598938725992903 |
| 15 | 630060602243145513 |
| 16 | 29375322688053255480 |
| 17 | 1472008290120323375502 |
[1,3,10,49,367,3850,52173,868614,17199370, 395757887,10396896795,307511681367,10124396776169, 367567456615441,14598938725992903, 630060602243145513,29375322688053255480, 1472008290120323375502] |