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| n | a(n) |
|---|---|
| 1 | -1 |
| 2 | 0 |
| 3 | -274 |
| 4 | 3480 |
| 5 | -96281 |
| 6 | 1983736 |
| 7 | -44477455 |
| 8 | 973668972 |
| 9 | -21447199320 |
| 10 | 471699618464 |
| 11 | -10378093042737 |
| 12 | 228314605056428 |
| 13 | -5022937786817620 |
| 14 | 110504554075400128 |
| 15 | -2431100545346633371 |
| 16 | 53484210384313253132 |
| 17 | -1176652635677112260460 |
[-1,0,-274,3480,-96281,1983736,-44477455, 973668972,-21447199320,471699618464, -10378093042737,228314605056428,-5022937786817620, 110504554075400128,-2431100545346633371, 53484210384313253132,-1176652635677112260460] |