n | a(n) |
---|---|
-1 | 1 |
0 | 2 |
1 | 3 |
2 | 7 |
3 | 27 |
4 | 137 |
5 | 873 |
6 | 6667 |
7 | 59427 |
8 | 605297 |
9 | 6936273 |
10 | 88315027 |
11 | 1236909627 |
12 | 18898578857 |
13 | 312811478073 |
14 | 5575974948187 |
15 | 106493278764627 |
16 | 2169463248814817 |
17 | 46958188870266273 |
18 | 1076202413702266147 |
19 | 26035005959162168427 |
20 | 662975982648919697177 |
21 | 17726672005071080580873 |
[1,2,3,7,27,137,873,6667,59427,605297,6936273, 88315027,1236909627,18898578857,312811478073, 5575974948187,106493278764627,2169463248814817, 46958188870266273,1076202413702266147, 26035005959162168427,662975982648919697177, 17726672005071080580873] |