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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 4 | 1 |
| 5 | 2 |
| 6 | 23 |
| 7 | 415 |
| 8 | 19041 |
| 9 | 1104045 |
| 10 | 79818336 |
| 11 | 6958257941 |
| 12 | 720814138673 |
| 13 | 87579097910309 |
[1,2,23,415,19041,1104045,79818336,6958257941, 720814138673,87579097910309] |