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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 | 4 |
| 3 | 10 |
| 4 | 116 |
| 5 | 2862 |
| 6 | 51686 |
| 7 | 4052747 |
| 8 | 435035530 |
| 9 | 65207007652 |
| 10 | 27807146172472 |
[1,4,10,116,2862,51686,4052747,435035530, 65207007652,27807146172472] |