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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | -9 |
| 4 | -90 |
| 5 | -1539 |
| 6 | 51759 |
| 7 | 7026831 |
| 8 | 1349328699 |
| 9 | -119669884380 |
| 10 | -462804380329131 |
| 11 | -818173230956710191 |
| 12 | -775566981773559330471 |
| 13 | 23349606875054800260574779 |
| 14 | 383206716517298992863985977570 |
[1,1,1,-9,-90,-1539,51759,7026831,1349328699, -119669884380,-462804380329131, -818173230956710191,-775566981773559330471, 23349606875054800260574779, 383206716517298992863985977570] |