n | a(n) |
---|---|
1 | 2 |
2 | 5 |
3 | 10 |
4 | 51 |
5 | 246 |
6 | 849 |
7 | 22026 |
8 | 217077 |
9 | 1092755 |
10 | 8870033 |
11 | 221167433 |
12 | 47255689927 |
13 | 82462576233 |
14 | 1043460553378 |
15 | 79180770078563 |
16 | 3215226335143234 |
17 | 23742453640900989 |
18 | 125781000834058586 |
[2,5,10,51,246,849,22026,217077,1092755,8870033, 221167433,47255689927,82462576233,1043460553378, 79180770078563,3215226335143234,23742453640900989, 125781000834058586] |