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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 75 |
| 4 | 4632 |
| 5 | 1076492 |
| 6 | 963182263 |
| 7 | 3317770165381 |
| 8 | 43809083383524391 |
| 9 | 2209112327971366587064 |
| 10 | 424273291301040427702718109 |
| 11 | 309707064465485300360403957730000 |
| 12 | 857932019835933358500355409793382735115 |
| 13 | 9007779604382069542348587670082074125962102375 |
[1,5,75,4632,1076492,963182263,3317770165381, 43809083383524391,2209112327971366587064, 424273291301040427702718109, 309707064465485300360403957730000, 857932019835933358500355409793382735115, 9007779604382069542348587670082074125962102375] |