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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | -1 |
| 6 | -2 |
| 7 | 0 |
| 8 | -10 |
| 9 | 29 |
| 10 | -689 |
| 11 | 79779 |
| 12 | -306741785 |
| 13 | -537059115735445 |
| 14 | 32782820784889194174016393 |
| 15 | 123899509182081496572342154385115870319926534 |
| 16 | 6620488215208352146569523585853411114659592927465468100410366988520167986216 |
[1,1,1,1,-1,-2,0,-10,29,-689,79779,-306741785, -537059115735445,32782820784889194174016393, 123899509182081496572342154385115870319926534, 66204882152083521465695235858534111146595929274654\ 68100410366988520167986216] |