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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | -4 |
| 4 | 40 |
| 5 | -17570 |
| 6 | 29277 |
| 7 | 1612051490 |
| 8 | -98797189506 |
| 9 | 24519692392546611 |
| 10 | -1102715711997300050 |
| 11 | -4167252029989605007510429722 |
| 12 | -29479989614260596083347544 |
| 13 | 4174157347638693670019191622559426971168 |
| 14 | 139672908285735171626083209102943170111074 |
[1,1,-4,40,-17570,29277,1612051490,-98797189506, 24519692392546611,-1102715711997300050, -4167252029989605007510429722, -29479989614260596083347544, 4174157347638693670019191622559426971168, 139672908285735171626083209102943170111074] |