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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 7 |
| 3 | -139 |
| 4 | 5473 |
| 5 | -51103 |
| 6 | 34988647 |
| 7 | -4784061619 |
| 8 | 17782347217 |
| 9 | -203906055033841 |
| 10 | 4586025046220899 |
| 11 | -234038275571853889 |
| 12 | 9127322584507530151393 |
| 13 | -4621897483978366951337161 |
| 14 | 390009953658229908025520161 |
| 15 | -1860452328661957054823447670979 |
| 16 | 111446346975327291562408943638981 |
| 17 | -14050053632877769956552601074149491 |
| 18 | 1269258883676324618437848731917951368967 |
| 19 | -1408182090109327874242950762763137949746859 |
[1,-1,7,-139,5473,-51103,34988647,-4784061619, 17782347217,-203906055033841,4586025046220899, -234038275571853889,9127322584507530151393, -4621897483978366951337161, 390009953658229908025520161, -1860452328661957054823447670979, 111446346975327291562408943638981, -14050053632877769956552601074149491, 1269258883676324618437848731917951368967, -1408182090109327874242950762763137949746859] |