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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 0 |
| 3 | 0 |
| 4 | 2 |
| 5 | -4 |
| 6 | 8 |
| 7 | -16 |
| 8 | 32 |
| 9 | -56 |
| 10 | 88 |
| 11 | -112 |
| 12 | 64 |
| 13 | 240 |
| 14 | -1264 |
| 15 | 4064 |
| 16 | -10814 |
| 17 | 25500 |
| 18 | -54200 |
| 19 | 102832 |
| 20 | -166020 |
| 21 | 190808 |
| 22 | 22304 |
| 23 | -1058880 |
| 24 | 4412424 |
| 25 | -13496544 |
| 26 | 35306480 |
| 27 | -82326496 |
| 28 | 172081840 |
| 29 | -315115328 |
| 30 | 464910368 |
| 31 | -363016000 |
| 32 | -871587808 |
| 33 | 5713552456 |
| 34 | -20289991016 |
[1,2,0,0,2,-4,8,-16,32,-56,88,-112,64,240,-1264, 4064,-10814,25500,-54200,102832,-166020,190808, 22304,-1058880,4412424,-13496544,35306480, -82326496,172081840,-315115328,464910368, -363016000,-871587808,5713552456,-20289991016] |