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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -2 |
| 3 | -2 |
| 4 | 4 |
| 5 | 8 |
| 6 | -4 |
| 7 | -24 |
| 8 | -8 |
| 9 | 56 |
| 10 | 64 |
| 11 | -96 |
| 12 | -240 |
| 13 | 64 |
| 14 | 672 |
| 15 | 352 |
| 16 | -1472 |
| 17 | -2048 |
| 18 | 2240 |
| 19 | 7040 |
| 20 | -384 |
| 21 | -18560 |
| 22 | -13312 |
| 23 | 37888 |
| 24 | 63744 |
| 25 | -49152 |
| 26 | -203264 |
| 27 | -29184 |
| 28 | 504832 |
| 29 | 464896 |
| 30 | -951296 |
| 31 | -1939456 |
| 32 | 972800 |
| 33 | 5781504 |
| 34 | 1933312 |
| 35 | -13508608 |
| 36 | -15429632 |
| 37 | 23150592 |
| 38 | 57876480 |
| 39 | -15441920 |
| 40 | -162054144 |
[1,0,-2,-2,4,8,-4,-24,-8,56,64,-96,-240,64,672, 352,-1472,-2048,2240,7040,-384,-18560,-13312, 37888,63744,-49152,-203264,-29184,504832,464896, -951296,-1939456,972800,5781504,1933312,-13508608, -15429632,23150592,57876480,-15441920,-162054144] |