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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 138035591 |
| 3 | 33576251318216 |
| 4 | 2766231303166191786 |
| 5 | 184087747131825069346215 |
| 6 | 13871923767653971368743823518 |
[1,138035591,33576251318216,2766231303166191786, 184087747131825069346215, 13871923767653971368743823518] |