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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -14 |
| 2 | 91 |
| 3 | -378 |
| 4 | 1197 |
| 5 | -3290 |
| 6 | 8386 |
| 7 | -20008 |
| 8 | 44800 |
| 9 | -95578 |
| 10 | 196679 |
| 11 | -391692 |
| 12 | 756798 |
| 13 | -1424934 |
| 14 | 2624119 |
| 15 | -4735878 |
| 16 | 8388919 |
| 17 | -14611226 |
| 18 | 25065397 |
| 19 | -42400456 |
| 20 | 70790195 |
| 21 | -116765126 |
| 22 | 190454404 |
| 23 | -307408346 |
| 24 | 491306907 |
[1,-14,91,-378,1197,-3290,8386,-20008,44800, -95578,196679,-391692,756798,-1424934,2624119, -4735878,8388919,-14611226,25065397,-42400456, 70790195,-116765126,190454404,-307408346, 491306907] |