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| n | a(n) |
|---|---|
| 0 | -2 |
| 1 | 8 |
| 2 | -52 |
| 3 | 112 |
| 4 | -51412 |
| 5 | 3469712 |
| 6 | -2491688 |
| 7 | 62534458528 |
| 8 | -22811578796 |
| 9 | 1052637839125232 |
| 10 | -1951793355443020696 |
| 11 | 1800318713817966304 |
| 12 | -132444323199647003032 |
| 13 | 130585857053193268706729632 |
| 14 | -9112129339306147838595664 |
[-2,8,-52,112,-51412,3469712,-2491688,62534458528, -22811578796,1052637839125232, -1951793355443020696,1800318713817966304, -132444323199647003032, 130585857053193268706729632, -9112129339306147838595664] |