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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 96 |
| 3 | 832 |
| 4 | 89520 |
| 5 | 389704 |
| 6 | 39506424 |
| 7 | 235092820 |
| 8 | 84143001856 |
| 9 | 158178730792 |
| 10 | 58325025609436 |
| 11 | 113966068418140 |
| 12 | 139531230013836984 |
| 13 | 86009870625207052 |
| 14 | 126568039998320295184 |
| 15 | 67124345535323038912 |
| 16 | 293815852611183910971392 |
[4,96,832,89520,389704,39506424,235092820, 84143001856,158178730792,58325025609436, 113966068418140,139531230013836984, 86009870625207052,126568039998320295184, 67124345535323038912,293815852611183910971392] |