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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -4 |
| 2 | -4 |
| 3 | 36 |
| 4 | -64 |
| 5 | 256 |
| 6 | -1328 |
| 7 | 4488 |
| 8 | -11406 |
| 9 | 17700 |
| 10 | 14716 |
| 11 | -194508 |
| 12 | 662768 |
| 13 | -1374476 |
| 14 | 2210780 |
| 15 | -5820284 |
| 16 | 25965483 |
| 17 | -95963664 |
| 18 | 259794360 |
| 19 | -545959440 |
| 20 | 952758316 |
| 21 | -1278120568 |
| 22 | 60070208 |
| 23 | 8030404744 |
| 24 | -34554134770 |
| 25 | 94549651780 |
| 26 | -196087124052 |
| 27 | 330754522268 |
| 28 | -511020392180 |
[1,-4,-4,36,-64,256,-1328,4488,-11406,17700,14716, -194508,662768,-1374476,2210780,-5820284,25965483, -95963664,259794360,-545959440,952758316, -1278120568,60070208,8030404744,-34554134770, 94549651780,-196087124052,330754522268, -511020392180] |