n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 27 |
6 | 85 |
7 | 262 |
8 | 873 |
9 | 2917 |
10 | 10011 |
11 | 34561 |
12 | 120815 |
13 | 424468 |
14 | 1501441 |
15 | 5334181 |
16 | 19035075 |
17 | 68167472 |
18 | 244928324 |
19 | 882555803 |
20 | 3188480899 |
21 | 11546307356 |
22 | 41901879156 |
23 | 152359984459 |
24 | 554991766194 |
25 | 2024964145507 |
[1,2,4,10,27,85,262,873,2917,10011,34561,120815, 424468,1501441,5334181,19035075,68167472, 244928324,882555803,3188480899,11546307356, 41901879156,152359984459,554991766194, 2024964145507] |