n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 42 |
6 | 132 |
7 | 421 |
8 | 1382 |
9 | 4478 |
10 | 15580 |
11 | 54114 |
12 | 181676 |
13 | 650484 |
14 | 2289320 |
15 | 8028901 |
16 | 28045302 |
17 | 103229014 |
18 | 372640460 |
19 | 1336511110 |
20 | 4882492452 |
21 | 17534836812 |
22 | 63692926552 |
23 | 234287550818 |
24 | 868236370364 |
25 | 3281589811404 |
[1,1,2,5,14,42,132,421,1382,4478,15580,54114, 181676,650484,2289320,8028901,28045302,103229014, 372640460,1336511110,4882492452,17534836812, 63692926552,234287550818,868236370364, 3281589811404] |