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| n | a(n) |
|---|---|
| -1 | 1 |
| 0 | 8 |
| 1 | 20 |
| 2 | 0 |
| 3 | -62 |
| 4 | 0 |
| 5 | 216 |
| 6 | 0 |
| 7 | -641 |
| 8 | 0 |
| 9 | 1636 |
| 10 | 0 |
| 11 | -3778 |
| 12 | 0 |
| 13 | 8248 |
| 14 | 0 |
| 15 | -17277 |
| 16 | 0 |
| 17 | 34664 |
| 18 | 0 |
| 19 | -66878 |
| 20 | 0 |
| 21 | 125312 |
| 22 | 0 |
| 23 | -229252 |
| 24 | 0 |
| 25 | 409676 |
| 26 | 0 |
| 27 | -716420 |
| 28 | 0 |
| 29 | 1230328 |
| 30 | 0 |
| 31 | -2079227 |
| 32 | 0 |
| 33 | 3460416 |
| 34 | 0 |
| 35 | -5677816 |
| 36 | 0 |
| 37 | 9198424 |
| 38 | 0 |
| 39 | -14729608 |
| 40 | 0 |
| 41 | 23328520 |
| 42 | 0 |
| 43 | -36567242 |
| 44 | 0 |
| 45 | 56774712 |
| 46 | 0 |
[1,8,20,0,-62,0,216,0,-641,0,1636,0,-3778,0,8248, 0,-17277,0,34664,0,-66878,0,125312,0,-229252,0, 409676,0,-716420,0,1230328,0,-2079227,0,3460416,0, -5677816,0,9198424,0,-14729608,0,23328520,0, -36567242,0,56774712,0] |