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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 15 |
| 4 | 83 |
| 5 | 385 |
| 6 | 2989 |
| 7 | 20559 |
| 8 | 203992 |
| 9 | 1827640 |
| 10 | 21864590 |
[1,4,15,83,385,2989,20559,203992,1827640,21864590] |