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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -24 |
| 2 | 264 |
| 3 | -1760 |
| 4 | 7944 |
| 5 | -25872 |
| 6 | 64416 |
| 7 | -133056 |
| 8 | 253704 |
| 9 | -472760 |
| 10 | 825264 |
| 11 | -1297056 |
| 12 | 1938336 |
| 13 | -2963664 |
| 14 | 4437312 |
| 15 | -6091584 |
| 16 | 8118024 |
| 17 | -11368368 |
| 18 | 15653352 |
| 19 | -19822176 |
| 20 | 24832944 |
| 21 | -32826112 |
| 22 | 42517728 |
| 23 | -51425088 |
| 24 | 61903776 |
| 25 | -78146664 |
| 26 | 98021616 |
| 27 | -115331264 |
| 28 | 133522752 |
[1,-24,264,-1760,7944,-25872,64416,-133056,253704, -472760,825264,-1297056,1938336,-2963664,4437312, -6091584,8118024,-11368368,15653352,-19822176, 24832944,-32826112,42517728,-51425088,61903776, -78146664,98021616,-115331264,133522752] |