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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 160 |
| 4 | 8608 |
| 5 | 1231578 |
| 6 | 462538206 |
| 7 | 456303004550 |
| 8 | 1184061531948168 |
| 9 | 8081950028633306006 |
| 10 | 145086737722751262521230 |
| 11 | 6849888315993282295524030922 |
[1,8,160,8608,1231578,462538206,456303004550, 1184061531948168,8081950028633306006, 145086737722751262521230, 6849888315993282295524030922] |