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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | -2 |
| 3 | -2 |
| 4 | 10 |
| 5 | 14 |
| 6 | -86 |
| 7 | -126 |
| 8 | 858 |
| 9 | 1302 |
| 10 | -9378 |
| 11 | -14606 |
| 12 | 108954 |
| 13 | 172698 |
| 14 | -1319966 |
| 15 | -2119118 |
| 16 | 16489594 |
| 17 | 26731542 |
| 18 | -210887998 |
| 19 | -344490170 |
| 20 | 2747510514 |
| 21 | 4515757426 |
| 22 | -36336187630 |
| 23 | -60023827438 |
| 24 | 486540793914 |
| 25 | 807121753178 |
| 26 | -6582918170714 |
| 27 | -10959656342678 |
| 28 | 89860260268098 |
[0,1,-2,-2,10,14,-86,-126,858,1302,-9378,-14606, 108954,172698,-1319966,-2119118,16489594,26731542, -210887998,-344490170,2747510514,4515757426, -36336187630,-60023827438,486540793914, 807121753178,-6582918170714,-10959656342678, 89860260268098] |