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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | -4 |
| 8 | 4 |
| 9 | 0 |
| 10 | 0 |
| 11 | 1 |
| 12 | -12 |
| 13 | 48 |
| 14 | -72 |
| 15 | 36 |
| 16 | 0 |
| 17 | 0 |
| 18 | 1 |
| 19 | -28 |
| 20 | 268 |
| 21 | -1056 |
| 22 | 1968 |
| 23 | -1728 |
| 24 | 576 |
| 25 | 0 |
| 26 | 0 |
| 27 | 1 |
| 28 | -60 |
| 29 | 1200 |
| 30 | -9480 |
| 31 | 37140 |
| 32 | -79200 |
| 33 | 93600 |
| 34 | -57600 |
| 35 | 14400 |
| 36 | 0 |
| 37 | 0 |
| 38 | 1 |
| 39 | -124 |
| 40 | 4924 |
| 41 | -70080 |
| 42 | 488640 |
| 43 | -1909440 |
| 44 | 4466880 |
| 45 | -6393600 |
| 46 | 5486400 |
| 47 | -2592000 |
| 48 | 518400 |
[1,0,0,1,0,0,1,-4,4,0,0,1,-12,48,-72,36,0,0,1,-28, 268,-1056,1968,-1728,576,0,0,1,-60,1200,-9480, 37140,-79200,93600,-57600,14400,0,0,1,-124,4924, -70080,488640,-1909440,4466880,-6393600,5486400, -2592000,518400] |