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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 88 |
| 2 | 112032 |
| 3 | 339519360 |
| 4 | -45065746337280 |
| 5 | -13641523340876605440 |
| 6 | -5909672857101969499054080 |
| 7 | -4213934311138261721595771125760 |
[2,88,112032,339519360,-45065746337280, -13641523340876605440,-5909672857101969499054080, -4213934311138261721595771125760] |