n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 10 |
4 | 25 |
5 | 66 |
6 | 177 |
7 | 484 |
8 | 1339 |
9 | 3742 |
10 | 10538 |
11 | 29866 |
12 | 85087 |
13 | 243478 |
14 | 699324 |
15 | 2015082 |
16 | 5822619 |
17 | 16865718 |
18 | 48958404 |
19 | 142390542 |
20 | 414837699 |
21 | 1210439958 |
22 | 3536809521 |
23 | 10347314544 |
24 | 30306977757 |
25 | 88861597426 |
26 | 260798283502 |
27 | 766092871654 |
28 | 2252240916665 |
[1,2,4,10,25,66,177,484,1339,3742,10538,29866, 85087,243478,699324,2015082,5822619,16865718, 48958404,142390542,414837699,1210439958, 3536809521,10347314544,30306977757,88861597426, 260798283502,766092871654,2252240916665] |