n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 12 |
5 | 34 |
6 | 118 |
7 | 396 |
8 | 1508 |
9 | 5670 |
10 | 22773 |
11 | 91337 |
12 | 381157 |
13 | 1597683 |
14 | 6855957 |
15 | 29599117 |
16 | 129748149 |
17 | 572349631 |
18 | 2551033858 |
19 | 11435935450 |
20 | 51651644306 |
21 | 234472103672 |
22 | 1070461943299 |
23 | 4908349870799 |
24 | 22607570625188 |
25 | 104515879798724 |
26 | 484955119433493 |
[1,1,2,4,12,34,118,396,1508,5670,22773,91337, 381157,1597683,6855957,29599117,129748149, 572349631,2551033858,11435935450,51651644306, 234472103672,1070461943299,4908349870799, 22607570625188,104515879798724,484955119433493] |