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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1447 |
| 3 | -1559527 |
| 4 | 366331136219 |
| 5 | -637231027521743 |
| 6 | 2629597771763437160249 |
| 7 | -9781318441276304057417323 |
| 8 | 5699253125605574587097648227233017 |
| 9 | -13391188869589008440145241321782451523 |
| 10 | 33214021675956829606886933935672301973543264421 |
[1,-1,1447,-1559527,366331136219,-637231027521743, 2629597771763437160249,-9781318441276304057417323, 5699253125605574587097648227233017, -13391188869589008440145241321782451523, 33214021675956829606886933935672301973543264421] |