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| n | a(n) |
|---|---|
| 6 | 1 |
| 7 | 37 |
| 8 | 895 |
| 9 | 18269 |
| 10 | 344845 |
| 11 | 6284126 |
| 12 | 113143395 |
| 13 | 2040278015 |
| 14 | 37168888376 |
[1,37,895,18269,344845,6284126,113143395, 2040278015,37168888376] |