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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 240 |
| 3 | 4888 |
| 4 | 77280 |
| 5 | 905768 |
| 6 | 4839120 |
| 7 | -116593352 |
| 8 | -4896306240 |
| 9 | -113193708472 |
| 10 | -1980778750800 |
| 11 | -26710380775592 |
| 12 | -228866364286560 |
| 13 | 853309115549288 |
| 14 | 91741652745294480 |
| 15 | 2505643247965090168 |
| 16 | 48655959795562600320 |
| 17 | 735547895204966951048 |
[8,240,4888,77280,905768,4839120,-116593352, -4896306240,-113193708472,-1980778750800, -26710380775592,-228866364286560,853309115549288, 91741652745294480,2505643247965090168, 48655959795562600320,735547895204966951048] |