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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -5 |
| 2 | 57 |
| 3 | -1661 |
| 4 | 68529 |
| 5 | -3570613 |
| 6 | 247557481 |
| 7 | -22399292077 |
| 8 | 2476740370529 |
| 9 | -323000223133285 |
| 10 | 49350756905258905 |
| 11 | -8776449485870211549 |
| 12 | 1790258423701998409233 |
| 13 | -412819053275844054102037 |
[1,-5,57,-1661,68529,-3570613,247557481, -22399292077,2476740370529,-323000223133285, 49350756905258905,-8776449485870211549, 1790258423701998409233,-412819053275844054102037] |