The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -9 |
| 2 | -19 |
| 3 | 1971 |
| 4 | 7961 |
| 5 | -1580049 |
| 6 | -9560059 |
| 7 | 2686469931 |
| 8 | 21670511921 |
| 9 | -7838281432089 |
| 10 | -79034002960099 |
| 11 | 34943616861129891 |
| 12 | 422806632973239881 |
| 13 | -220928651974538628129 |
| 14 | -3118693689740162472139 |
| 15 | 1880318896105818396109851 |
| 16 | 30335009203988869812319841 |
[1,-9,-19,1971,7961,-1580049,-9560059,2686469931, 21670511921,-7838281432089,-79034002960099, 34943616861129891,422806632973239881, -220928651974538628129,-3118693689740162472139, 1880318896105818396109851, 30335009203988869812319841] |