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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 0 |
| 5 | -2 |
| 6 | 1 |
| 7 | 4 |
| 8 | -5 |
| 9 | -7 |
| 10 | 18 |
| 11 | 7 |
| 12 | -55 |
| 13 | 18 |
| 14 | 146 |
| 15 | -155 |
| 16 | -322 |
| 17 | 692 |
| 18 | 476 |
| 19 | -2446 |
| 20 | 307 |
| 21 | 7322 |
| 22 | -6276 |
| 23 | -18277 |
| 24 | 33061 |
| 25 | 33376 |
| 26 | -129238 |
| 27 | -10899 |
| 28 | 420594 |
| 29 | -276272 |
| 30 | -1147125 |
| 31 | 1742502 |
| 32 | 2413761 |
| 33 | -7448113 |
| 34 | -2292774 |
| 35 | 25986573 |
| 36 | -11940263 |
| 37 | -76138258 |
| 38 | 96229907 |
| 39 | 178087693 |
| 40 | -450647034 |
[1,0,0,1,0,-2,1,4,-5,-7,18,7,-55,18,146,-155,-322, 692,476,-2446,307,7322,-6276,-18277,33061,33376, -129238,-10899,420594,-276272,-1147125,1742502, 2413761,-7448113,-2292774,25986573,-11940263, -76138258,96229907,178087693,-450647034] |