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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 64 |
| 3 | 5832 |
| 4 | 884736 |
| 5 | 216000000 |
| 6 | 80621568000 |
| 7 | 43912253952000 |
| 8 | 33560740233216000 |
| 9 | 34835065137266688000 |
| 10 | 47784725839872000000000 |
| 11 | 84653556693609480192000000 |
| 12 | 189912972073787235237888000000 |
| 13 | 530482432188949589775089664000000 |
| 14 | 1818063982946861510421834104832000000 |
[1,64,5832,884736,216000000,80621568000, 43912253952000,33560740233216000, 34835065137266688000,47784725839872000000000, 84653556693609480192000000, 189912972073787235237888000000, 530482432188949589775089664000000, 1818063982946861510421834104832000000] |