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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -1 |
| 3 | 0 |
| 4 | 4 |
| 5 | 0 |
| 6 | -7 |
| 7 | 5 |
| 8 | 15 |
| 9 | -16 |
| 10 | -24 |
| 11 | 48 |
| 12 | 33 |
| 13 | -119 |
| 14 | -17 |
| 15 | 272 |
| 16 | -84 |
| 17 | -560 |
| 18 | 441 |
| 19 | 1037 |
| 20 | -1441 |
| 21 | -1632 |
| 22 | 3920 |
| 23 | 1824 |
| 24 | -9471 |
| 25 | 273 |
| 26 | 20767 |
| 27 | -10016 |
| 28 | -41260 |
| 29 | 40800 |
| 30 | 72505 |
| 31 | -122859 |
| 32 | -104209 |
| 33 | 318224 |
| 34 | 85560 |
| 35 | -740656 |
| 36 | 147105 |
| 37 | 1566873 |
| 38 | -1034865 |
| 39 | -2986640 |
| 40 | 3636604 |
| 41 | 4938416 |
| 42 | -10259847 |
| 43 | -6240227 |
[1,1,-1,0,4,0,-7,5,15,-16,-24,48,33,-119,-17,272, -84,-560,441,1037,-1441,-1632,3920,1824,-9471,273, 20767,-10016,-41260,40800,72505,-122859,-104209, 318224,85560,-740656,147105,1566873,-1034865, -2986640,3636604,4938416,-10259847,-6240227] |