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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | -4 |
| 3 | -234 |
| 4 | 6712 |
| 5 | 352810 |
| 6 | -51057612 |
| 7 | -1023950914 |
| 8 | 1108394851184 |
| 9 | -71310362507694 |
| 10 | -51164568485366420 |
| 11 | 13196238860000066662 |
| 12 | 3757445119118639509416 |
| 13 | -2956206137979802134429574 |
[0,2,-4,-234,6712,352810,-51057612,-1023950914, 1108394851184,-71310362507694,-51164568485366420, 13196238860000066662,3757445119118639509416, -2956206137979802134429574] |