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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 0 |
| 3 | -2 |
| 4 | 6 |
| 5 | 12 |
| 6 | 0 |
| 7 | -8 |
| 8 | 24 |
| 9 | 44 |
| 10 | 0 |
| 11 | -30 |
| 12 | 54 |
| 13 | 104 |
| 14 | 0 |
| 15 | -60 |
| 16 | 238 |
| 17 | 466 |
| 18 | 0 |
| 19 | -402 |
| 20 | 924 |
| 21 | 1892 |
| 22 | 0 |
| 23 | -1228 |
| 24 | 3264 |
| 25 | 6006 |
| 26 | 0 |
| 27 | -4052 |
| 28 | 6688 |
| 29 | 13052 |
| 30 | 0 |
| 31 | -7452 |
| 32 | 16536 |
| 33 | 32140 |
| 34 | 0 |
| 35 | -24828 |
| 36 | 39660 |
| 37 | 85744 |
| 38 | 0 |
| 39 | -53592 |
| 40 | 114336 |
| 41 | 212406 |
| 42 | 0 |
| 43 | -141090 |
| 44 | 190754 |
| 45 | 386956 |
| 46 | 0 |
| 47 | -216572 |
| 48 | 136078 |
[1,2,0,-2,6,12,0,-8,24,44,0,-30,54,104,0,-60,238, 466,0,-402,924,1892,0,-1228,3264,6006,0,-4052, 6688,13052,0,-7452,16536,32140,0,-24828,39660, 85744,0,-53592,114336,212406,0,-141090,190754, 386956,0,-216572,136078] |