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| n | a(n) |
|---|---|
| 2 | 4 |
| 3 | 224 |
| 4 | 161312 |
| 5 | 1683907808 |
| 6 | 256213978094784 |
| 7 | 575112148876911852416 |
| 8 | 19248204431728945392010740480 |
| 9 | 9687459136669902998216039379883774976 |
| 10 | 73815961078227084527800998811241905249902260224 |
| 11 | 8562177846610881578580018959490439733543225146878872883200 |
[4,224,161312,1683907808,256213978094784, 575112148876911852416, 19248204431728945392010740480, 9687459136669902998216039379883774976, 73815961078227084527800998811241905249902260224, 85621778466108815785800189594904397335432251468788\ 72883200] |