n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 34 |
6 | 100 |
7 | 310 |
8 | 973 |
9 | 3124 |
10 | 10251 |
11 | 34086 |
12 | 114610 |
13 | 389205 |
14 | 1332788 |
15 | 4596587 |
16 | 15952281 |
17 | 55667566 |
18 | 195209636 |
19 | 687535017 |
20 | 2431044066 |
21 | 8626448629 |
22 | 30709429207 |
23 | 109645265403 |
24 | 392536229012 |
25 | 1408793986056 |
26 | 5067691347863 |
27 | 18268127956618 |
28 | 65983199912542 |
[1,2,2,5,13,34,100,310,973,3124,10251,34086, 114610,389205,1332788,4596587,15952281,55667566, 195209636,687535017,2431044066,8626448629, 30709429207,109645265403,392536229012, 1408793986056,5067691347863,18268127956618, 65983199912542] |