n | a(n) |
---|---|
2 | 2 |
3 | 6 |
4 | 34 |
5 | 221 |
6 | 1100 |
7 | 6711 |
8 | 40137 |
9 | 256224 |
10 | 1690933 |
11 | 11342919 |
12 | 77426134 |
13 | 536305675 |
14 | 3750315161 |
15 | 26444298871 |
16 | 187832060390 |
[2,6,34,221,1100,6711,40137,256224,1690933, 11342919,77426134,536305675,3750315161, 26444298871,187832060390] |