n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 9 |
6 | 18 |
7 | 39 |
8 | 80 |
9 | 165 |
10 | 331 |
11 | 664 |
12 | 1307 |
13 | 2569 |
14 | 4983 |
15 | 9624 |
16 | 18416 |
17 | 35060 |
18 | 66218 |
19 | 124411 |
20 | 232138 |
21 | 430783 |
22 | 794431 |
23 | 1457063 |
24 | 2656709 |
25 | 4817940 |
26 | 8688296 |
27 | 15584381 |
28 | 27802598 |
29 | 49340196 |
30 | 87100640 |
31 | 152968396 |
32 | 267264610 |
33 | 464600889 |
[1,1,1,2,4,9,18,39,80,165,331,664,1307,2569,4983, 9624,18416,35060,66218,124411,232138,430783, 794431,1457063,2656709,4817940,8688296,15584381, 27802598,49340196,87100640,152968396,267264610, 464600889] |