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| n | a(n) |
|---|---|
| 8 | 654424 |
| 9 | 19209584 |
| 10 | 769534688 |
| 11 | 39729927744 |
| 12 | 2548520444480 |
| 13 | 197890932247680 |
| 14 | 18237517555977472 |
| 15 | 1964023269922621952 |
| 16 | 244043425473888612352 |
| 17 | 34621419911316556017664 |
| 18 | 5557654485553447834816512 |
| 19 | 1001744885342172367869042688 |
| 20 | 201381195927539873971774119936 |
[654424,19209584,769534688,39729927744, 2548520444480,197890932247680,18237517555977472, 1964023269922621952,244043425473888612352, 34621419911316556017664,5557654485553447834816512, 1001744885342172367869042688, 201381195927539873971774119936] |