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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | 2 |
| 4 | -3 |
| 5 | 1 |
| 6 | -9 |
| 7 | 15 |
| 8 | -7 |
| 9 | 1 |
| 10 | 94 |
| 11 | -160 |
| 12 | 80 |
| 13 | -15 |
| 14 | 1 |
| 15 | -2220 |
| 16 | 3790 |
| 17 | -1915 |
| 18 | 375 |
| 19 | -31 |
| 20 | 1 |
| 21 | 114456 |
| 22 | -195461 |
| 23 | 98875 |
| 24 | -19460 |
| 25 | 1652 |
| 26 | -63 |
| 27 | 1 |
| 28 | -12542341 |
| 29 | 21419587 |
| 30 | -10836231 |
| 31 | 2133635 |
| 32 | -181559 |
| 33 | 7035 |
| 34 | -127 |
| 35 | 1 |
| 36 | 2868686486 |
| 37 | -4899099640 |
| 38 | 2478483560 |
| 39 | -488022556 |
| 40 | 41534164 |
| 41 | -1611120 |
| 42 | 29360 |
| 43 | -255 |
| 44 | 1 |
[1,-1,1,2,-3,1,-9,15,-7,1,94,-160,80,-15,1,-2220, 3790,-1915,375,-31,1,114456,-195461,98875,-19460, 1652,-63,1,-12542341,21419587,-10836231,2133635, -181559,7035,-127,1,2868686486,-4899099640, 2478483560,-488022556,41534164,-1611120,29360, -255,1] |