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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | -4 |
| 3 | -6 |
| 4 | 0 |
| 5 | 24 |
| 6 | 51 |
| 7 | 89 |
| 8 | 47 |
| 9 | -152 |
| 10 | -578 |
| 11 | -1149 |
| 12 | -1482 |
| 13 | -738 |
| 14 | 2384 |
| 15 | 8901 |
| 16 | 18476 |
| 17 | 26774 |
| 18 | 24151 |
| 19 | -7143 |
| 20 | -86804 |
| 21 | -226605 |
| 22 | -406442 |
| 23 | -539872 |
| 24 | -441822 |
| 25 | 181268 |
| 26 | 1671148 |
| 27 | 4240334 |
| 28 | 7618777 |
| 29 | 10551340 |
| 30 | 10218856 |
| 31 | 1973258 |
| 32 | -20190349 |
| 33 | -61492391 |
| 34 | -121880826 |
[1,-1,-4,-6,0,24,51,89,47,-152,-578,-1149,-1482, -738,2384,8901,18476,26774,24151,-7143,-86804, -226605,-406442,-539872,-441822,181268,1671148, 4240334,7618777,10551340,10218856,1973258, -20190349,-61492391,-121880826] |