n | a(n) |
---|---|
2 | 3 |
3 | 6 |
4 | 21 |
5 | 142 |
6 | 913 |
7 | 5515 |
8 | 33531 |
9 | 214022 |
10 | 1397796 |
11 | 9191036 |
12 | 61195343 |
13 | 413319489 |
14 | 2823635182 |
15 | 19459845933 |
16 | 135103772788 |
[3,6,21,142,913,5515,33531,214022,1397796,9191036, 61195343,413319489,2823635182,19459845933, 135103772788] |