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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 27 |
| 4 | 486 |
| 5 | 7776 |
| 6 | -2423196 |
| 7 | -97338996 |
| 8 | 5883879500784 |
| 9 | 548540050402080 |
| 10 | -1737375315124971951360 |
| 11 | -405928706169160555680960 |
| 12 | 60788545124934395018363657569920 |
| 13 | 36207408592259278909089966337224960 |
| 14 | -237458310218887960183820317532070376189904640 |
[0,1,3,27,486,7776,-2423196,-97338996, 5883879500784,548540050402080, -1737375315124971951360,-405928706169160555680960, 60788545124934395018363657569920, 36207408592259278909089966337224960, -237458310218887960183820317532070376189904640] |