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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1104 |
| 4 | 413088 |
| 5 | 329520720 |
| 6 | 491236986720 |
| 7 | 1181472603447024 |
| 8 | 4293813878010363168 |
| 9 | 22458802092186671702160 |
| 10 | 162578056150830848930694240 |
| 11 | 1578225306620809383358117044144 |
| 12 | 20018143307386606584084592083087648 |
| 13 | 324613983359213454501611571669979410000 |
[1,0,0,1104,413088,329520720,491236986720, 1181472603447024,4293813878010363168, 22458802092186671702160, 162578056150830848930694240, 1578225306620809383358117044144, 20018143307386606584084592083087648, 324613983359213454501611571669979410000] |