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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | -4 |
| 2 | 230 |
| 3 | -7880 |
| 4 | 922378 |
| 5 | -104579660 |
| 6 | 22872643950 |
| 7 | -5494080273552 |
| 8 | 1980593407445778 |
| 9 | -817099673512164244 |
| 10 | 445251089168585478902 |
| 11 | -279905701143388803184984 |
| 12 | 216483300093818109473976346 |
[2,-4,230,-7880,922378,-104579660,22872643950, -5494080273552,1980593407445778, -817099673512164244,445251089168585478902, -279905701143388803184984, 216483300093818109473976346] |