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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -6 |
| 2 | -6 |
| 3 | 498 |
| 4 | 2010 |
| 5 | -163806 |
| 6 | -1426326 |
| 7 | 113319858 |
| 8 | 1731433530 |
| 9 | -133040247486 |
| 10 | -3200805321846 |
| 11 | 235719742497618 |
| 12 | 8363215587567450 |
| 13 | -584103976037953566 |
| 14 | -29313609779751086166 |
| 15 | 1917198413998763777778 |
[1,-6,-6,498,2010,-163806,-1426326,113319858, 1731433530,-133040247486,-3200805321846, 235719742497618,8363215587567450, -584103976037953566,-29313609779751086166, 1917198413998763777778] |