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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 864 |
| 6 | 3318960 |
| 7 | 82787609160 |
| 8 | 9795914085489952 |
[0,0,0,0,864,3318960,82787609160,9795914085489952] |