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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -248 |
| 2 | 57380 |
| 3 | -13242240 |
| 4 | 3055845770 |
| 5 | -705181025216 |
| 6 | 162730809182936 |
| 7 | -37552508189222400 |
| 8 | 8665789092645124915 |
| 9 | -1999757252424845206240 |
| 10 | 461473159094045987499908 |
| 11 | -106491663578673234478298880 |
| 12 | 24574504905153510156698896190 |
[1,-248,57380,-13242240,3055845770,-705181025216, 162730809182936,-37552508189222400, 8665789092645124915,-1999757252424845206240, 461473159094045987499908, -106491663578673234478298880, 24574504905153510156698896190] |