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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4608 |
| 2 | 3680384 |
| 3 | 1159546496 |
| 4 | 196104916224 |
| 5 | 20744281145088 |
| 6 | 1506723437772160 |
| 7 | 80061561536187264 |
| 8 | 3259013884045691392 |
| 9 | 105263289020017081344 |
| 10 | 2773568653326645985920 |
| 11 | 60972806221760186327168 |
| 12 | 1139342548441240046991104 |
| 13 | 18382460780903936262392064 |
[1,4608,3680384,1159546496,196104916224, 20744281145088,1506723437772160,80061561536187264, 3259013884045691392,105263289020017081344, 2773568653326645985920,60972806221760186327168, 1139342548441240046991104, 18382460780903936262392064] |