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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 21 |
| 3 | 241 |
| 4 | 55681 |
| 5 | 3099816961 |
| 6 | 9608865160705105921 |
| 7 | 92330289676612360941221747472778199041 |
| 8 | 8524882391767151111154918892947398067446166736305624023874497267723631329281 |
[11,21,241,55681,3099816961,9608865160705105921, 92330289676612360941221747472778199041, 85248823917671511111549188929473980674461667363056\ 24023874497267723631329281] |