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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 139 |
| 4 | 5748 |
| 5 | 496085 |
| 6 | 97439921 |
| 7 | 41966406867 |
| 8 | 39919204098331 |
| 9 | 84196647385137200 |
| 10 | 391960289300558475785 |
| 11 | 4034683591387591205214712 |
| 12 | 91832712356420807374009031299 |
| 13 | 4618825005074327343319160956639454 |
[1,8,139,5748,496085,97439921,41966406867, 39919204098331,84196647385137200, 391960289300558475785,4034683591387591205214712, 91832712356420807374009031299, 4618825005074327343319160956639454] |