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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -1 |
| 2 | 1 |
| 3 | -97 |
| 4 | 2945 |
| 5 | -148929 |
| 6 | 15801729 |
| 7 | -1624918817 |
| 8 | 267458400513 |
| 9 | -52723991194497 |
| 10 | 12773658359030017 |
| 11 | -3865567565691658721 |
| 12 | 1370070916604727994497 |
| 13 | -576252092267236760553793 |
| 14 | 281775954919455982384816769 |
| 15 | -158211465667174544221762575521 |
[1,-1,1,-97,2945,-148929,15801729,-1624918817, 267458400513,-52723991194497,12773658359030017, -3865567565691658721,1370070916604727994497, -576252092267236760553793, 281775954919455982384816769, -158211465667174544221762575521] |