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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | -1 |
| 4 | 4 |
| 5 | -19 |
| 6 | 114 |
| 7 | -659 |
| 8 | 5328 |
| 9 | -38375 |
| 10 | 400430 |
| 11 | -3578279 |
| 12 | 44920360 |
| 13 | -476298835 |
| 14 | 6949878740 |
| 15 | -85215100151 |
| 16 | 1492480745728 |
| 17 | -20903398375855 |
| 18 | 382829285287446 |
| 19 | -6399968826052559 |
| 20 | 136747967762351544 |
| 21 | -2394435177245209195 |
| 22 | 55602194767215266060 |
| 23 | -1123931378903214542099 |
[1,0,-1,4,-19,114,-659,5328,-38375,400430, -3578279,44920360,-476298835,6949878740, -85215100151,1492480745728,-20903398375855, 382829285287446,-6399968826052559, 136747967762351544,-2394435177245209195, 55602194767215266060,-1123931378903214542099] |