n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 25 |
6 | 69 |
7 | 197 |
8 | 583 |
9 | 1762 |
10 | 5441 |
11 | 17042 |
12 | 54072 |
13 | 173334 |
14 | 560659 |
15 | 1827306 |
16 | 5995570 |
17 | 19787135 |
18 | 65643226 |
19 | 218777532 |
20 | 732181107 |
21 | 2459576149 |
22 | 8290442750 |
23 | 28031056619 |
24 | 95045477945 |
25 | 323112137130 |
26 | 1101073839413 |
27 | 3760472582922 |
28 | 12869488098939 |
29 | 44127605854574 |
[0,1,2,4,10,25,69,197,583,1762,5441,17042,54072, 173334,560659,1827306,5995570,19787135,65643226, 218777532,732181107,2459576149,8290442750, 28031056619,95045477945,323112137130, 1101073839413,3760472582922,12869488098939, 44127605854574] |