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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | -1 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | -17 |
| 8 | 0 |
| 9 | 31 |
| 10 | 0 |
| 11 | -691 |
| 12 | 0 |
| 13 | 5461 |
| 14 | 0 |
| 15 | -929569 |
| 16 | 0 |
| 17 | 3202291 |
| 18 | 0 |
| 19 | -221930581 |
| 20 | 0 |
| 21 | 4722116521 |
| 22 | 0 |
| 23 | -968383680827 |
| 24 | 0 |
| 25 | 14717667114151 |
| 26 | 0 |
| 27 | -2093660879252671 |
| 28 | 0 |
| 29 | 86125672563201181 |
| 30 | 0 |
| 31 | -129848163681107301953 |
| 32 | 0 |
| 33 | 868320396104950823611 |
| 34 | 0 |
[1,1,0,-1,0,1,0,-17,0,31,0,-691,0,5461,0,-929569, 0,3202291,0,-221930581,0,4722116521,0, -968383680827,0,14717667114151,0, -2093660879252671,0,86125672563201181,0, -129848163681107301953,0,868320396104950823611,0] |