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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 672 |
| 3 | 91147 |
| 4 | 14486409 |
| 5 | 2516759469 |
| 6 | 463051052653 |
| 7 | 88674496050245 |
| 8 | 17490154693966234 |
| 9 | 3528922457876864195 |
| 10 | 724934544034900295558 |
| 11 | 151110852750623222310189 |
| 12 | 31881833636363854856989129 |
| 13 | 6795336519252277650628254056 |
| 14 | 1461001691259055273207790036665 |
[1,7,672,91147,14486409,2516759469,463051052653, 88674496050245,17490154693966234, 3528922457876864195,724934544034900295558, 151110852750623222310189, 31881833636363854856989129, 6795336519252277650628254056, 1461001691259055273207790036665] |