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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 85 |
| 4 | 5525 |
| 5 | 1419925 |
| 6 | 1455423125 |
| 7 | 5962868543125 |
| 8 | 97701601079103125 |
| 9 | 6403069829921181503125 |
| 10 | 1678532740564688125136703125 |
| 11 | 1760070825503098980191468752703125 |
| 12 | 7382273863761775568111978346806480703125 |
| 13 | 123854010565759745011512941023673583762640703125 |
[1,1,5,85,5525,1419925,1455423125,5962868543125, 97701601079103125,6403069829921181503125, 1678532740564688125136703125, 1760070825503098980191468752703125, 7382273863761775568111978346806480703125, 123854010565759745011512941023673583762640703125] |