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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | -1 |
| 3 | 1 |
| 4 | 0 |
| 5 | -14 |
| 6 | 150 |
| 7 | -1322 |
| 8 | 10976 |
| 9 | -87824 |
| 10 | 655920 |
| 11 | -3981152 |
| 12 | 5308512 |
| 13 | 458307760 |
| 14 | -12593915152 |
| 15 | 254156155888 |
| 16 | -4589735470080 |
| 17 | 77850265751296 |
| 18 | -1250201506099968 |
| 19 | 18653867368039168 |
| 20 | -241973220007075840 |
[0,1,-1,1,0,-14,150,-1322,10976,-87824,655920, -3981152,5308512,458307760,-12593915152, 254156155888,-4589735470080,77850265751296, -1250201506099968,18653867368039168, -241973220007075840] |