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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 2666496 |
| 6 | 8063483904 |
| 7 | 23667221200896 |
| 8 | 1546057323758223360 |
| 9 | 374969260180817571741696 |
| 10 | 163457085861840749434433961984 |
| 11 | 112603564970401075916528447354044416 |
| 12 | 152237556325944043707910988547266571141120 |
| 13 | 824860715471760736216894023298196038268145893376 |
[0,0,0,0,2666496,8063483904,23667221200896, 1546057323758223360,374969260180817571741696, 163457085861840749434433961984, 112603564970401075916528447354044416, 152237556325944043707910988547266571141120, 824860715471760736216894023298196038268145893376] |