n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 26 |
3 | 130 |
4 | 628 |
5 | 2954 |
6 | 13612 |
7 | 61716 |
8 | 276200 |
9 | 1223002 |
10 | 5367676 |
11 | 23383100 |
12 | 101215576 |
13 | 435712580 |
14 | 1866667448 |
15 | 7963424104 |
16 | 33846062544 |
17 | 143373104378 |
18 | 605518549660 |
19 | 2550438016812 |
20 | 10716162617336 |
[1,5,26,130,628,2954,13612,61716,276200,1223002, 5367676,23383100,101215576,435712580,1866667448, 7963424104,33846062544,143373104378,605518549660, 2550438016812,10716162617336] |