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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | 0 |
| 4 | -1 |
| 5 | 0 |
| 6 | 5 |
| 7 | 0 |
| 8 | -45 |
| 9 | 0 |
| 10 | 665 |
| 11 | 0 |
| 12 | -14457 |
| 13 | 0 |
| 14 | 433741 |
| 15 | 0 |
| 16 | -17160421 |
| 17 | 0 |
| 18 | 865407905 |
| 19 | 0 |
| 20 | -54179057649 |
| 21 | 0 |
| 22 | 4122477869077 |
| 23 | 0 |
| 24 | -374673778941981 |
| 25 | 0 |
| 26 | 40087507726395689 |
| 27 | 0 |
| 28 | -4987405802167886825 |
| 29 | 0 |
| 30 | 713925031978621041757 |
| 31 | 0 |
| 32 | -116506260029721326349781 |
| 33 | 0 |
| 34 | 21501227314690679723073329 |
[1,-1,1,0,-1,0,5,0,-45,0,665,0,-14457,0,433741,0, -17160421,0,865407905,0,-54179057649,0, 4122477869077,0,-374673778941981,0, 40087507726395689,0,-4987405802167886825,0, 713925031978621041757,0,-116506260029721326349781, 0,21501227314690679723073329] |