n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 12 |
4 | 31 |
5 | 82 |
6 | 223 |
7 | 616 |
8 | 1723 |
9 | 4862 |
10 | 13815 |
11 | 39468 |
12 | 113257 |
13 | 326198 |
14 | 942425 |
15 | 2730032 |
16 | 7926659 |
17 | 23061590 |
18 | 67214399 |
19 | 196211252 |
20 | 573590621 |
21 | 1678941350 |
22 | 4920076877 |
23 | 14433305000 |
24 | 42381641381 |
25 | 124558477682 |
26 | 366371703833 |
[1,2,5,12,31,82,223,616,1723,4862,13815,39468, 113257,326198,942425,2730032,7926659,23061590, 67214399,196211252,573590621,1678941350, 4920076877,14433305000,42381641381,124558477682, 366371703833] |