n | a(n) |
---|---|
1 | 2 |
2 | 7 |
3 | 31 |
4 | 157 |
5 | 3907 |
6 | 19531 |
7 | 2441407 |
8 | 12207031 |
9 | 61035157 |
10 | 305175781 |
11 | 9313225746154785157 |
12 | 177635683940025046467781066894531 |
[2,7,31,157,3907,19531,2441407,12207031,61035157, 305175781,9313225746154785157, 177635683940025046467781066894531] |