n | a(n) |
---|---|
2 | 3 |
3 | 6 |
4 | 20 |
5 | 132 |
6 | 938 |
7 | 5733 |
8 | 34331 |
9 | 217843 |
10 | 1415657 |
11 | 9240592 |
12 | 61276873 |
13 | 413691585 |
14 | 2827480062 |
15 | 19490660020 |
16 | 135319158941 |
[3,6,20,132,938,5733,34331,217843,1415657,9240592, 61276873,413691585,2827480062,19490660020, 135319158941] |