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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 208 |
| 3 | 38112 |
| 4 | 8002304 |
| 5 | 858105364 |
| 6 | 48452117136 |
| 7 | 1706069013928 |
| 8 | 41801237632858 |
| 9 | 764295988745248 |
| 10 | 10946853015640490 |
| 11 | 127331263486979692 |
| 12 | 1237140566105421398 |
| 13 | 10270879068733905810 |
| 14 | 74243436332274681890 |
[4,208,38112,8002304,858105364,48452117136, 1706069013928,41801237632858,764295988745248, 10946853015640490,127331263486979692, 1237140566105421398,10270879068733905810, 74243436332274681890] |