Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | -1 |
1 | 1 |
2 | -1 |
3 | 1 |
4 | -5 |
5 | 63 |
6 | -315 |
7 | 99 |
8 | -675675 |
9 | 135135 |
10 | -1640925 |
11 | 83329155 |
12 | -4583103525 |
13 | 5791834125 |
14 | -71152682225625 |
15 | 14230536445125 |
16 | -26797763435625 |
17 | 24833960277501375 |
18 | -73881031825566590625 |
19 | 8546099690638125 |
20 | -106610328924292590271875 |
[-1,1,-1,1,-5,63,-315,99,-675675,135135,-1640925, 83329155,-4583103525,5791834125,-71152682225625, 14230536445125,-26797763435625,24833960277501375, -73881031825566590625,8546099690638125, -106610328924292590271875] |