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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 | 2 |
| 3 | 10 |
| 4 | 42 |
| 5 | 358 |
| 6 | 4468 |
| 7 | 88056 |
| 8 | 2745186 |
| 9 | 134355866 |
| 10 | 10264692132 |
| 11 | 1234801357470 |
| 12 | 232966546265096 |
| 13 | 68939282741912248 |
[1,2,10,42,358,4468,88056,2745186,134355866, 10264692132,1234801357470,232966546265096, 68939282741912248] |