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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 3 |
| 5 | -30 |
| 6 | 180 |
| 7 | -1113 |
| 8 | 9009 |
| 9 | -92484 |
| 10 | 1082214 |
| 11 | -13409495 |
| 12 | 175970751 |
| 13 | -2496463398 |
| 14 | 38493086632 |
| 15 | -639838512285 |
| 16 | 11345248531169 |
| 17 | -213247722492136 |
| 18 | 4238445880373338 |
| 19 | -88930681789096755 |
[1,0,0,0,3,-30,180,-1113,9009,-92484,1082214, -13409495,175970751,-2496463398,38493086632, -639838512285,11345248531169,-213247722492136, 4238445880373338,-88930681789096755] |