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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | -1 |
| 3 | 4 |
| 4 | -4 |
| 5 | 0 |
| 6 | 8 |
| 7 | -12 |
| 8 | 0 |
| 9 | 2 |
| 10 | 16 |
| 11 | -32 |
| 12 | 0 |
| 13 | 16 |
| 14 | 0 |
| 15 | 32 |
| 16 | -80 |
| 17 | 0 |
| 18 | 80 |
| 19 | 0 |
| 20 | -16 |
| 21 | 64 |
| 22 | -192 |
| 23 | 0 |
| 24 | 320 |
| 25 | 0 |
| 26 | -192 |
| 27 | 0 |
| 28 | 128 |
| 29 | -448 |
| 30 | 0 |
| 31 | 1120 |
| 32 | 0 |
| 33 | -1344 |
| 34 | 0 |
| 35 | 272 |
| 36 | 256 |
| 37 | -1024 |
| 38 | 0 |
| 39 | 3584 |
| 40 | 0 |
| 41 | -7168 |
| 42 | 0 |
| 43 | 4352 |
| 44 | 0 |
| 45 | 512 |
| 46 | -2304 |
| 47 | 0 |
| 48 | 10752 |
| 49 | 0 |
| 50 | -32256 |
| 51 | 0 |
| 52 | 39168 |
| 53 | 0 |
| 54 | -7936 |
| 55 | 1024 |
[1,2,-1,4,-4,0,8,-12,0,2,16,-32,0,16,0,32,-80,0, 80,0,-16,64,-192,0,320,0,-192,0,128,-448,0,1120,0, -1344,0,272,256,-1024,0,3584,0,-7168,0,4352,0,512, -2304,0,10752,0,-32256,0,39168,0,-7936,1024] |