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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | 2 |
| 3 | -5 |
| 4 | 9 |
| 5 | -12 |
| 6 | 16 |
| 7 | -23 |
| 8 | 36 |
| 9 | -47 |
| 10 | 60 |
| 11 | -84 |
| 12 | 115 |
| 13 | -149 |
| 14 | 188 |
| 15 | -245 |
| 16 | 321 |
| 17 | -406 |
| 18 | 505 |
| 19 | -641 |
| 20 | 813 |
| 21 | -1007 |
| 22 | 1237 |
| 23 | -1533 |
| 24 | 1901 |
| 25 | -2321 |
| 26 | 2816 |
| 27 | -3437 |
| 28 | 4191 |
| 29 | -5055 |
| 30 | 6068 |
| 31 | -7307 |
| 32 | 8792 |
| 33 | -10501 |
| 34 | 12490 |
| 35 | -14886 |
| 36 | 17720 |
| 37 | -20975 |
| 38 | 24755 |
| 39 | -29236 |
| 40 | 34492 |
| 41 | -40522 |
| 42 | 47486 |
| 43 | -55666 |
[1,-2,2,-5,9,-12,16,-23,36,-47,60,-84,115,-149, 188,-245,321,-406,505,-641,813,-1007,1237,-1533, 1901,-2321,2816,-3437,4191,-5055,6068,-7307,8792, -10501,12490,-14886,17720,-20975,24755,-29236, 34492,-40522,47486,-55666] |