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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 27 |
| 4 | 3969 |
| 5 | 900963 |
| 6 | 401227533 |
| 7 | 378139318893 |
| 8 | 781827640754454 |
| 9 | 3616937252790336657 |
| 10 | 37896435473683175186868 |
| 11 | 906454150918706470312961064 |
| 12 | 49772528444719473909687286111017 |
| 13 | 6299004718478220148511987214265415811 |
[0,0,27,3969,900963,401227533,378139318893, 781827640754454,3616937252790336657, 37896435473683175186868, 906454150918706470312961064, 49772528444719473909687286111017, 6299004718478220148511987214265415811] |