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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 39 |
| 3 | 1122 |
| 4 | 28558 |
| 5 | 680163 |
| 6 | 15536757 |
| 7 | 344857924 |
| 8 | 7495831836 |
| 9 | 160347899205 |
| 10 | 3387224876995 |
| 11 | 70828953712806 |
| 12 | 1468712060491434 |
| 13 | 30241806008351527 |
| 14 | 618983574479950353 |
| 15 | 12604083861223212168 |
| 16 | 255502116339219984952 |
[1,39,1122,28558,680163,15536757,344857924, 7495831836,160347899205,3387224876995, 70828953712806,1468712060491434,30241806008351527, 618983574479950353,12604083861223212168, 255502116339219984952] |