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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 43 |
| 3 | 519 |
| 4 | 12259 |
| 5 | 570911 |
| 6 | 52683885 |
| 7 | 9661943973 |
| 8 | 3529267255201 |
| 9 | 2571928557261907 |
| 10 | 3744070741500225585 |
| 11 | 10898903552323266521821 |
| 12 | 63494356952926436300329797 |
| 13 | 740796894931520786982829942993 |
[7,43,519,12259,570911,52683885,9661943973, 3529267255201,2571928557261907, 3744070741500225585,10898903552323266521821, 63494356952926436300329797, 740796894931520786982829942993] |