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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -2 |
| 3 | 10 |
| 4 | -83 |
| 5 | 968 |
| 6 | -14550 |
| 7 | 267657 |
| 8 | -5823342 |
| 9 | 146255131 |
| 10 | -4164222891 |
| 11 | 132539992770 |
| 12 | -4663220787205 |
| 13 | 179712285498419 |
| 14 | -7528614819216452 |
| 15 | 340644924343427080 |
| 16 | -16555539553909999044 |
| 17 | 860131362806819785898 |
[1,-2,10,-83,968,-14550,267657,-5823342,146255131, -4164222891,132539992770,-4663220787205, 179712285498419,-7528614819216452, 340644924343427080,-16555539553909999044, 860131362806819785898] |