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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -2 |
| 2 | 4 |
| 3 | -10 |
| 4 | 20 |
| 5 | -36 |
| 6 | 64 |
| 7 | -112 |
| 8 | 189 |
| 9 | -308 |
| 10 | 492 |
| 11 | -778 |
| 12 | 1210 |
| 13 | -1844 |
| 14 | 2776 |
| 15 | -4144 |
| 16 | 6114 |
| 17 | -8914 |
| 18 | 12884 |
| 19 | -18484 |
| 20 | 26302 |
| 21 | -37124 |
| 22 | 52040 |
| 23 | -72512 |
| 24 | 100415 |
| 25 | -138196 |
| 26 | 189160 |
| 27 | -257648 |
| 28 | 349184 |
| 29 | -470932 |
| 30 | 632312 |
| 31 | -845472 |
| 32 | 1125853 |
| 33 | -1493222 |
| 34 | 1973060 |
| 35 | -2597892 |
| 36 | 3408754 |
[1,-2,4,-10,20,-36,64,-112,189,-308,492,-778,1210, -1844,2776,-4144,6114,-8914,12884,-18484,26302, -37124,52040,-72512,100415,-138196,189160,-257648, 349184,-470932,632312,-845472,1125853,-1493222, 1973060,-2597892,3408754] |