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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -199 |
| 3 | -599 |
| 4 | 118801 |
| 5 | 598001 |
| 6 | -118202999 |
| 7 | -835804199 |
| 8 | 164648394401 |
| 9 | 1501935112801 |
| 10 | -294865174808999 |
| 11 | -3298735400410999 |
| 12 | 645404649179386801 |
| 13 | 8562369610165784401 |
| 14 | -1669489718256239898199 |
| 15 | -25644124626720436220999 |
| 16 | 4982825030141999258376001 |
[1,1,-199,-599,118801,598001,-118202999, -835804199,164648394401,1501935112801, -294865174808999,-3298735400410999, 645404649179386801,8562369610165784401, -1669489718256239898199,-25644124626720436220999, 4982825030141999258376001] |