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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -1 |
| 3 | -7 |
| 4 | -145 |
| 5 | -6095 |
| 6 | -433025 |
| 7 | -46676375 |
| 8 | -7108596625 |
| 9 | -1454225641375 |
| 10 | -384836032842625 |
| 11 | -127950804666254375 |
| 12 | -52219402100109700625 |
| 13 | -25668587693366081579375 |
| 14 | -14959038795678519196890625 |
| 15 | -10198912212548907619042984375 |
| 16 | -8042754039731999959020139140625 |
[1,-1,-7,-145,-6095,-433025,-46676375,-7108596625, -1454225641375,-384836032842625, -127950804666254375,-52219402100109700625, -25668587693366081579375, -14959038795678519196890625, -10198912212548907619042984375, -8042754039731999959020139140625] |