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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 14 |
| 4 | 1128 |
| 5 | 90942080 |
| 6 | 57157560576 |
| 7 | 67818988957718528 |
| 8 | 115047995548743401472 |
| 9 | 674758653138775267142795264 |
| 10 | 40819609745761407890621234130376982528 |
| 11 | 221388314080552960064314183934017536000000 |
| 12 | 79870389582370042643423622863118514819531536385179648 |
[1,1,14,1128,90942080,57157560576, 67818988957718528,115047995548743401472, 674758653138775267142795264, 40819609745761407890621234130376982528, 221388314080552960064314183934017536000000, 79870389582370042643423622863118514819531536385179\ 648] |