| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | 1 |
| 4 | -1 |
| 5 | 3 |
| 6 | 1 |
| 7 | 1 |
| 8 | 7 |
| 9 | 3 |
| 10 | 9 |
| 11 | 17 |
| 12 | 15 |
| 13 | 35 |
| 14 | 49 |
| 15 | 65 |
| 16 | 119 |
| 17 | 163 |
| 18 | 249 |
| 19 | 401 |
| 20 | 575 |
| 21 | 899 |
| 22 | 1377 |
| 23 | 2049 |
| 24 | 3175 |
| 25 | 4803 |
| 26 | 7273 |
| 27 | 11153 |
| 28 | 16879 |
| 29 | 25699 |
| 30 | 39185 |
| 31 | 59457 |
| 32 | 90583 |
| 33 | 137827 |
| 34 | 209497 |
| 35 | 318993 |
| 36 | 485151 |
| 37 | 737987 |
| 38 | 1123137 |
| 39 | 1708289 |
| 40 | 2599111 |
| 41 | 3954563 |
| 42 | 6015689 |
| 43 | 9152785 |
| 44 | 13924815 |
[1,-1,1,1,-1,3,1,1,7,3,9,17,15,35,49,65,119,163, 249,401,575,899,1377,2049,3175,4803,7273,11153, 16879,25699,39185,59457,90583,137827,209497, 318993,485151,737987,1123137,1708289,2599111, 3954563,6015689,9152785,13924815] |