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| n | a(n) |
|---|---|
| 6 | 1 |
| 7 | 36 |
| 8 | 841 |
| 9 | 16465 |
| 10 | 296326 |
| 11 | 5122877 |
| 12 | 87116283 |
| 13 | 1477363967 |
| 14 | 25191909848 |
| 15 | 434119587475 |
| 16 | 7583461369373 |
| 17 | 134533482045389 |
| 18 | 2426299018270338 |
| 19 | 44506885647682026 |
| 20 | 830512607486659272 |
| 21 | 15764082963927084216 |
| 22 | 304295666452406076997 |
| 23 | 5971518739677370493811 |
[1,36,841,16465,296326,5122877,87116283, 1477363967,25191909848,434119587475,7583461369373, 134533482045389,2426299018270338, 44506885647682026,830512607486659272, 15764082963927084216,304295666452406076997, 5971518739677370493811] |