n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 10 |
5 | 20 |
6 | 42 |
7 | 87 |
8 | 179 |
9 | 370 |
10 | 765 |
11 | 1580 |
12 | 3264 |
13 | 6744 |
14 | 13933 |
15 | 28785 |
16 | 59470 |
17 | 122865 |
18 | 253838 |
19 | 524428 |
20 | 1083466 |
21 | 2238435 |
22 | 4624595 |
23 | 9554390 |
24 | 19739321 |
25 | 40781336 |
26 | 84254032 |
27 | 174068400 |
28 | 359624425 |
29 | 742982225 |
30 | 1534997482 |
31 | 3171296957 |
32 | 6551883314 |
33 | 13536157460 |
[1,1,2,5,10,20,42,87,179,370,765,1580,3264,6744, 13933,28785,59470,122865,253838,524428,1083466, 2238435,4624595,9554390,19739321,40781336, 84254032,174068400,359624425,742982225,1534997482, 3171296957,6551883314,13536157460] |