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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -4 |
| 2 | 34 |
| 3 | -442 |
| 4 | 7654 |
| 5 | -165634 |
| 6 | 4301254 |
| 7 | -130313362 |
| 8 | 4512058774 |
| 9 | -175757170114 |
| 10 | 7606919927974 |
| 11 | -362157366660082 |
| 12 | 18809374928573494 |
| 13 | -1058311485335621794 |
| 14 | 64126470727596628294 |
| 15 | -4163172358878650459602 |
| 16 | 288297029592971540217814 |
| 17 | -21212159439736738874060674 |
[1,-4,34,-442,7654,-165634,4301254,-130313362, 4512058774,-175757170114,7606919927974, -362157366660082,18809374928573494, -1058311485335621794,64126470727596628294, -4163172358878650459602,288297029592971540217814, -21212159439736738874060674] |