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| n | a(n) |
|---|---|
| 6 | 1 |
| 7 | 37 |
| 8 | 895 |
| 9 | 18266 |
| 10 | 344683 |
| 11 | 6278835 |
| 12 | 113007059 |
| 13 | 2037215971 |
| 14 | 37105902922 |
| 15 | 686909906637 |
[1,37,895,18266,344683,6278835,113007059, 2037215971,37105902922,686909906637] |