n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 16 |
5 | 54 |
6 | 232 |
7 | 1194 |
8 | 5348 |
9 | 28874 |
10 | 153508 |
11 | 823908 |
12 | 4528784 |
13 | 31785252 |
14 | 218092306 |
15 | 1562069462 |
16 | 11268454920 |
[1,2,6,16,54,232,1194,5348,28874,153508,823908, 4528784,31785252,218092306,1562069462,11268454920] |