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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 10 |
| 5 | 560 |
| 6 | 18393200 |
| 7 | 11307340057302083200 |
| 8 | 79095479027242971758816977525848827652668769392000 |
[1,1,2,10,560,18393200,11307340057302083200, 79095479027242971758816977525848827652668769392000\ ] |