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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 48 |
| 3 | 4293 |
| 4 | 25306589 |
| 5 | 3320271114951974 |
| 6 | 35477031266428030986307045164173 |
| 7 | 2194567415041196627693116249170732977132495687459466991253014650 |
[4,48,4293,25306589,3320271114951974, 35477031266428030986307045164173, 21945674150411966276931162491707329771324956874594\ 66991253014650] |