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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 | 2 |
| 2 | -1 |
| 3 | 11 |
| 4 | -30 |
| 5 | 471 |
| 6 | -3015 |
| 7 | 58032 |
| 8 | -643188 |
| 9 | 14520933 |
| 10 | -236345445 |
| 11 | 6153059178 |
| 12 | -133142041494 |
| 13 | 3956037592815 |
| 14 | -106753027544163 |
| 15 | 3588266331746712 |
| 16 | -115669410756336360 |
| 17 | 4361169482903542617 |
| 18 | -162972793825872488073 |
[0,2,-1,11,-30,471,-3015,58032,-643188,14520933, -236345445,6153059178,-133142041494,3956037592815, -106753027544163,3588266331746712, -115669410756336360,4361169482903542617, -162972793825872488073] |