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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 17296 |
| 4 | 535095 |
| 5 | 3995376 |
| 6 | 7681680 |
| 7 | 3995376 |
| 8 | 535095 |
| 9 | 17296 |
| 10 | 0 |
| 11 | 0 |
| 12 | 1 |
[1,0,0,17296,535095,3995376,7681680,3995376, 535095,17296,0,0,1] |