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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | -2 |
| 3 | 0 |
| 4 | 5 |
| 5 | 0 |
| 6 | -10 |
| 7 | 2 |
| 8 | 18 |
| 9 | 0 |
| 10 | -32 |
| 11 | 0 |
| 12 | 55 |
| 13 | -5 |
| 14 | -90 |
| 15 | 0 |
| 16 | 144 |
| 17 | 0 |
| 18 | -226 |
| 19 | 10 |
| 20 | 346 |
| 21 | 0 |
| 22 | -522 |
| 23 | 0 |
| 24 | 777 |
| 25 | -18 |
| 26 | -1138 |
| 27 | 0 |
| 28 | 1648 |
| 29 | 0 |
| 30 | -2362 |
| 31 | 32 |
| 32 | 3348 |
| 33 | 0 |
| 34 | -4704 |
| 35 | 0 |
| 36 | 6554 |
| 37 | -55 |
| 38 | -9056 |
| 39 | 0 |
| 40 | 12425 |
| 41 | 0 |
| 42 | -16932 |
| 43 | 90 |
| 44 | 22922 |
| 45 | 0 |
| 46 | -30848 |
| 47 | 0 |
| 48 | 41282 |
| 49 | -144 |
| 50 | -54946 |
| 51 | 0 |
| 52 | 72768 |
| 53 | 0 |
| 54 | -95914 |
[1,-1,-2,0,5,0,-10,2,18,0,-32,0,55,-5,-90,0,144,0, -226,10,346,0,-522,0,777,-18,-1138,0,1648,0,-2362, 32,3348,0,-4704,0,6554,-55,-9056,0,12425,0,-16932, 90,22922,0,-30848,0,41282,-144,-54946,0,72768,0, -95914] |