n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 16 |
4 | 45 |
5 | 126 |
6 | 357 |
7 | 1024 |
8 | 2979 |
9 | 8800 |
10 | 26422 |
11 | 80688 |
12 | 250705 |
13 | 792568 |
14 | 2548620 |
15 | 8331568 |
16 | 27667109 |
17 | 93241152 |
18 | 318569656 |
19 | 1102246040 |
20 | 3857916552 |
21 | 13644697000 |
22 | 48716177272 |
23 | 175417870080 |
24 | 636493447625 |
25 | 2325399611652 |
26 | 8548381939932 |
27 | 31599848465276 |
[1,2,6,16,45,126,357,1024,2979,8800,26422,80688, 250705,792568,2548620,8331568,27667109,93241152, 318569656,1102246040,3857916552,13644697000, 48716177272,175417870080,636493447625, 2325399611652,8548381939932,31599848465276] |