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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 21 |
| 2 | 103 |
| 3 | -12033 |
| 4 | -357135 |
| 5 | 8768781 |
| 6 | 787702551 |
| 7 | -1241334297 |
| 8 | -1889772255903 |
| 9 | -36328649434875 |
| 10 | 4985785564324551 |
| 11 | 227492331940693071 |
| 12 | -13759811757404126127 |
| 13 | -1211664945256937744643 |
| 14 | 35015649011638037564535 |
| 15 | 6468927150200228196505911 |
| 16 | -41681870334800058325568319 |
[1,21,103,-12033,-357135,8768781,787702551, -1241334297,-1889772255903,-36328649434875, 4985785564324551,227492331940693071, -13759811757404126127,-1211664945256937744643, 35015649011638037564535,6468927150200228196505911, -41681870334800058325568319] |