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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 55 |
| 4 | 958 |
| 5 | 10954 |
| 6 | 89042 |
| 7 | 566178 |
| 8 | 3035844 |
| 9 | 14551996 |
| 10 | 65113158 |
| 11 | 280515214 |
| 12 | 1187820788 |
| 13 | 5004343732 |
[0,0,55,958,10954,89042,566178,3035844,14551996, 65113158,280515214,1187820788,5004343732] |