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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 0 |
| 3 | 3 |
| 4 | -5 |
| 5 | 2 |
| 6 | 9 |
| 7 | -21 |
| 8 | 16 |
| 9 | 23 |
| 10 | -81 |
| 11 | 90 |
| 12 | 37 |
| 13 | -289 |
| 14 | 432 |
| 15 | -69 |
| 16 | -941 |
| 17 | 1874 |
| 18 | -1071 |
| 19 | -2685 |
| 20 | 7504 |
| 21 | -6961 |
| 22 | -5913 |
| 23 | 27882 |
| 24 | -35891 |
| 25 | -3817 |
| 26 | 95472 |
| 27 | -163437 |
| 28 | 60331 |
| 29 | 294050 |
| 30 | -681255 |
| 31 | 507867 |
| 32 | 761488 |
| 33 | -2631865 |
| 34 | 2886111 |
| 35 | 1268730 |
| 36 | -9418571 |
| 37 | 13922063 |
| 38 | -1966032 |
| 39 | -30793173 |
| 40 | 60603331 |
| 41 | -33742222 |
| 42 | -88447455 |
[1,-1,0,3,-5,2,9,-21,16,23,-81,90,37,-289,432,-69, -941,1874,-1071,-2685,7504,-6961,-5913,27882, -35891,-3817,95472,-163437,60331,294050,-681255, 507867,761488,-2631865,2886111,1268730,-9418571, 13922063,-1966032,-30793173,60603331,-33742222, -88447455] |