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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 89 |
| 4 | 1720 |
| 5 | 45887 |
| 6 | 1595192 |
| 7 | 69438623 |
| 8 | 3675895762 |
| 9 | 231400961167 |
| 10 | 17017734251838 |
| 11 | 1441193215057543 |
[1,1,7,89,1720,45887,1595192,69438623,3675895762, 231400961167,17017734251838,1441193215057543] |