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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | -12 |
| 2 | 488 |
| 3 | -55552 |
| 4 | 12546944 |
| 5 | -4711567872 |
| 6 | 2650074624000 |
| 7 | -2084720933010432 |
| 8 | 2185097305985613824 |
| 9 | -2943182792681798926336 |
| 10 | 4953485656236312191369216 |
| 11 | -10186669183126638973192372224 |
[2,-12,488,-55552,12546944,-4711567872, 2650074624000,-2084720933010432, 2185097305985613824,-2943182792681798926336, 4953485656236312191369216, -10186669183126638973192372224] |