n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 14 |
4 | 39 |
5 | 106 |
6 | 283 |
7 | 748 |
8 | 1967 |
9 | 5160 |
10 | 13521 |
11 | 35412 |
12 | 92725 |
13 | 242774 |
14 | 635609 |
15 | 1664066 |
16 | 4356603 |
17 | 11405758 |
18 | 29860687 |
19 | 78176320 |
20 | 204668291 |
21 | 535828572 |
22 | 1402817445 |
23 | 3672623784 |
24 | 9615053929 |
25 | 25172538026 |
26 | 65902560173 |
27 | 172535142518 |
[1,2,5,14,39,106,283,748,1967,5160,13521,35412, 92725,242774,635609,1664066,4356603,11405758, 29860687,78176320,204668291,535828572,1402817445, 3672623784,9615053929,25172538026,65902560173, 172535142518] |