n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 24 |
5 | 87 |
6 | 332 |
7 | 1320 |
8 | 5407 |
9 | 22672 |
10 | 96844 |
11 | 419910 |
12 | 1843386 |
13 | 8176962 |
14 | 36594388 |
15 | 165026353 |
16 | 749170529 |
17 | 3420949803 |
18 | 15702232962 |
19 | 72407225094 |
20 | 335276107549 |
21 | 1558289108596 |
22 | 7267201176311 |
23 | 33996105203757 |
24 | 159484982985619 |
25 | 750134031377432 |
[0,1,3,7,24,87,332,1320,5407,22672,96844,419910, 1843386,8176962,36594388,165026353,749170529, 3420949803,15702232962,72407225094,335276107549, 1558289108596,7267201176311,33996105203757, 159484982985619,750134031377432] |