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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -27 |
| 2 | 1033 |
| 3 | -2052 |
| 4 | 678479 |
| 5 | -229140 |
| 6 | 90560233 |
| 7 | -19683468 |
| 8 | 5567648159 |
| 9 | -1771863012 |
| 10 | 86896568215 |
| 11 | -92509892604 |
| 12 | 3404530630321949 |
| 13 | -27717219294804 |
| 14 | 129533862152191 |
| 15 | 10789613295377940 |
| 16 | 26812970120521435423 |
| 17 | -9652659575381477316 |
| 18 | -34355113414331425098749 |
[1,-27,1033,-2052,678479,-229140,90560233, -19683468,5567648159,-1771863012,86896568215, -92509892604,3404530630321949,-27717219294804, 129533862152191,10789613295377940, 26812970120521435423,-9652659575381477316, -34355113414331425098749] |