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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -24 |
| 2 | 228 |
| 3 | -944 |
| 4 | 114 |
| 5 | 13920 |
| 6 | -40824 |
| 7 | -35568 |
| 8 | 314943 |
| 9 | -32016 |
| 10 | -1256028 |
| 11 | -1702560 |
| 12 | 7990622 |
| 13 | 15859872 |
| 14 | -44241384 |
| 15 | -69900560 |
| 16 | 66340899 |
| 17 | 389812176 |
| 18 | 368445848 |
| 19 | -1602538800 |
| 20 | -2603154606 |
| 21 | 114976000 |
| 22 | 12365751792 |
[1,-24,228,-944,114,13920,-40824,-35568,314943, -32016,-1256028,-1702560,7990622,15859872, -44241384,-69900560,66340899,389812176,368445848, -1602538800,-2603154606,114976000,12365751792] |