n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 10 |
4 | 21 |
5 | 51 |
6 | 122 |
7 | 295 |
8 | 725 |
9 | 1792 |
10 | 4455 |
11 | 11133 |
12 | 27930 |
13 | 70305 |
14 | 177483 |
15 | 449160 |
16 | 1139157 |
17 | 2894625 |
18 | 7367720 |
19 | 18781387 |
20 | 47941271 |
21 | 122524216 |
22 | 313484385 |
23 | 802877055 |
24 | 2058184346 |
25 | 5280670051 |
26 | 13559216117 |
27 | 34841384560 |
28 | 89587774395 |
[1,1,5,10,21,51,122,295,725,1792,4455,11133,27930, 70305,177483,449160,1139157,2894625,7367720, 18781387,47941271,122524216,313484385,802877055, 2058184346,5280670051,13559216117,34841384560, 89587774395] |