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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | -4 |
| 3 | -130 |
| 4 | 2200 |
| 5 | 393178 |
| 6 | -36230060 |
| 7 | -2241493098 |
| 8 | 696842413488 |
| 9 | 151155071419698 |
| 10 | -94998751466350804 |
| 11 | 4870009119362109230 |
| 12 | 9231493784347343489864 |
| 13 | 1174397467642045406094346 |
[0,2,-4,-130,2200,393178,-36230060,-2241493098, 696842413488,151155071419698,-94998751466350804, 4870009119362109230,9231493784347343489864, 1174397467642045406094346] |