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| n | a(n) |
|---|---|
| 2 | 0 |
| 3 | 11 |
| 4 | 32 |
| 5 | 285 |
| 6 | 1349 |
| 7 | 9222 |
| 8 | 54014 |
| 9 | 353731 |
| 10 | 2251144 |
| 11 | 14926216 |
| 12 | 99321087 |
| 13 | 674855955 |
| 14 | 4635871503 |
| 15 | 32311508644 |
| 16 | 227740491756 |
[0,11,32,285,1349,9222,54014,353731,2251144, 14926216,99321087,674855955,4635871503, 32311508644,227740491756] |