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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | -3 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | -18 |
| 11 | -18 |
| 12 | 42 |
| 13 | 0 |
| 14 | -135 |
| 15 | -270 |
| 16 | 477 |
| 17 | 648 |
| 18 | -1980 |
| 19 | -2988 |
| 20 | 4140 |
| 21 | 14052 |
| 22 | -21690 |
| 23 | -52920 |
| 24 | 55020 |
| 25 | 201852 |
| 26 | -162774 |
| 27 | -914538 |
| 28 | 555750 |
| 29 | 3229524 |
| 30 | -1188327 |
| 31 | -13301370 |
| 32 | 1402686 |
| 33 | 52334268 |
| 34 | 95751 |
| 35 | -195398208 |
| 36 | -58983558 |
| 37 | 761838084 |
| 38 | 359664885 |
| 39 | -2910516786 |
| 40 | -1946958399 |
| 41 | 10681132140 |
| 42 | 10207745148 |
| 43 | -40522674258 |
[1,0,0,0,0,0,-3,0,0,0,-18,-18,42,0,-135,-270,477, 648,-1980,-2988,4140,14052,-21690,-52920,55020, 201852,-162774,-914538,555750,3229524,-1188327, -13301370,1402686,52334268,95751,-195398208, -58983558,761838084,359664885,-2910516786, -1946958399,10681132140,10207745148,-40522674258] |