n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 11 |
4 | 33 |
5 | 166 |
6 | 589 |
7 | 2216 |
8 | 8935 |
9 | 33984 |
10 | 137056 |
11 | 539085 |
12 | 2100341 |
13 | 8324716 |
14 | 32607928 |
15 | 128652672 |
16 | 507032667 |
17 | 1992083368 |
18 | 7853132654 |
19 | 30894420646 |
20 | 121642017784 |
21 | 479048967517 |
22 | 1885229164497 |
23 | 7423732617043 |
24 | 29223734864421 |
25 | 115048209160729 |
26 | 452968829090506 |
[1,1,3,11,33,166,589,2216,8935,33984,137056, 539085,2100341,8324716,32607928,128652672, 507032667,1992083368,7853132654,30894420646, 121642017784,479048967517,1885229164497, 7423732617043,29223734864421,115048209160729, 452968829090506] |