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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 22 |
| 2 | -94 |
| 3 | -27500 |
| 4 | -442004 |
| 5 | 53855912 |
| 6 | 2462221624 |
| 7 | -132603427088 |
| 8 | -12879424086640 |
| 9 | 329810916948832 |
| 10 | 74254604271575584 |
| 11 | -272705805989586112 |
| 12 | -478110301690448457536 |
| 13 | -8626939166846096792960 |
| 14 | 3402728145231415580480384 |
| 15 | 144669210933209758019200768 |
[1,22,-94,-27500,-442004,53855912,2462221624, -132603427088,-12879424086640,329810916948832, 74254604271575584,-272705805989586112, -478110301690448457536,-8626939166846096792960, 3402728145231415580480384, 144669210933209758019200768] |