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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | -5 |
| 3 | 19 |
| 4 | 178 |
| 5 | 175 |
| 6 | -7739 |
| 7 | -72056 |
| 8 | -33179 |
| 9 | 6899311 |
| 10 | 87861076 |
| 11 | 215532301 |
| 12 | -11151014291 |
| 13 | -222077806202 |
| 14 | -1563185592617 |
| 15 | 22953386817343 |
| 16 | 878911293113026 |
| 17 | 12330887396253691 |
| 18 | 1416506544326449 |
| 19 | -4284948239134152536 |
[1,-2,-5,19,178,175,-7739,-72056,-33179,6899311, 87861076,215532301,-11151014291,-222077806202, -1563185592617,22953386817343,878911293113026, 12330887396253691,1416506544326449, -4284948239134152536] |