| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 0 |
| 3 | 0 |
| 4 | 16 |
| 5 | -6 |
| 6 | 8 |
| 7 | 68 |
| 8 | -42 |
| 9 | 68 |
| 10 | 208 |
| 11 | -160 |
| 12 | 326 |
| 13 | 502 |
| 14 | -420 |
| 15 | 1156 |
| 16 | 994 |
| 17 | -670 |
| 18 | 3216 |
| 19 | 1720 |
| 20 | -8 |
| 21 | 7536 |
| 22 | 2704 |
| 23 | 5600 |
| 24 | 12952 |
| 25 | 6786 |
| 26 | 26060 |
| 27 | 15640 |
| 28 | 17196 |
| 29 | 98906 |
| 30 | -24644 |
| 31 | 83148 |
| 32 | 270212 |
| 33 | -138436 |
| 34 | 177012 |
| 35 | 895512 |
| 36 | -784064 |
| 37 | 835534 |
| 38 | 1842640 |
| 39 | -1419764 |
[2,0,0,16,-6,8,68,-42,68,208,-160,326,502,-420, 1156,994,-670,3216,1720,-8,7536,2704,5600,12952, 6786,26060,15640,17196,98906,-24644,83148,270212, -138436,177012,895512,-784064,835534,1842640, -1419764] |