n | a(n) |
---|---|
0 | 2 |
1 | 6 |
2 | 38 |
3 | 234 |
4 | 1442 |
5 | 8886 |
6 | 54758 |
7 | 337434 |
8 | 2079362 |
9 | 12813606 |
10 | 78960998 |
11 | 486579594 |
12 | 2998438562 |
13 | 18477210966 |
14 | 113861704358 |
15 | 701647437114 |
16 | 4323746327042 |
17 | 26644125399366 |
18 | 164188498723238 |
19 | 1011775117738794 |
[2,6,38,234,1442,8886,54758,337434,2079362, 12813606,78960998,486579594,2998438562, 18477210966,113861704358,701647437114, 4323746327042,26644125399366,164188498723238, 1011775117738794] |