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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -48 |
| 2 | 756 |
| 3 | -5888 |
| 4 | 24150 |
| 5 | -36288 |
| 6 | -117208 |
| 7 | 675840 |
| 8 | -1022787 |
| 9 | -1159200 |
| 10 | 5880732 |
| 11 | -4451328 |
| 12 | -7510594 |
| 13 | 5625984 |
| 14 | 18257400 |
| 15 | 15794176 |
| 16 | -117400878 |
| 17 | 49093776 |
| 18 | 202566980 |
| 19 | -142195200 |
| 20 | -88609248 |
| 21 | -282275136 |
| 22 | 428795256 |
| 23 | 510935040 |
| 24 | -637480625 |
| 25 | 360508512 |
| 26 | -1978535160 |
[1,-48,756,-5888,24150,-36288,-117208,675840, -1022787,-1159200,5880732,-4451328,-7510594, 5625984,18257400,15794176,-117400878,49093776, 202566980,-142195200,-88609248,-282275136, 428795256,510935040,-637480625,360508512, -1978535160] |