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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -13 |
| 2 | 193 |
| 3 | -78 |
| 4 | -10321 |
| 5 | 2210 |
| 6 | 1478233 |
| 7 | -278642 |
| 8 | -179934241 |
| 9 | 60825258 |
| 10 | 9913046215 |
| 11 | -20454873946 |
| 12 | -1824158214038851 |
| 13 | 9774070278466 |
| 14 | 2236191574749391 |
| 15 | -6290034747551490 |
| 16 | -139815398850117076577 |
| 17 | 5243615137036531034 |
| 18 | 205178725886737979027251 |
[1,-13,193,-78,-10321,2210,1478233,-278642, -179934241,60825258,9913046215,-20454873946, -1824158214038851,9774070278466,2236191574749391, -6290034747551490,-139815398850117076577, 5243615137036531034,205178725886737979027251] |