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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -2 |
| 3 | 0 |
| 4 | 14 |
| 5 | 0 |
| 6 | -62 |
| 7 | 0 |
| 8 | 254 |
| 9 | 0 |
| 10 | -5110 |
| 11 | 0 |
| 12 | 2828954 |
| 13 | 0 |
| 14 | -114674 |
| 15 | 0 |
| 16 | 237036478 |
| 17 | 0 |
| 18 | -11499383114 |
| 19 | 0 |
| 20 | 183092554714 |
| 21 | 0 |
| 22 | -3584085584926 |
| 23 | 0 |
| 24 | 3965530936622474 |
| 25 | 0 |
| 26 | -573989008898786 |
| 27 | 0 |
| 28 | 6375197353574922166 |
| 29 | 0 |
| 30 | -9251189109760413581110 |
| 31 | 0 |
| 32 | 33111281730973040956798 |
| 33 | 0 |
[1,0,-2,0,14,0,-62,0,254,0,-5110,0,2828954,0, -114674,0,237036478,0,-11499383114,0,183092554714, 0,-3584085584926,0,3965530936622474,0, -573989008898786,0,6375197353574922166,0, -9251189109760413581110,0,33111281730973040956798, 0] |