n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 42 |
6 | 132 |
7 | 429 |
8 | 1430 |
9 | 4862 |
10 | 16796 |
11 | 58785 |
12 | 208010 |
13 | 742873 |
14 | 2674282 |
15 | 9693840 |
16 | 35351966 |
17 | 129613793 |
18 | 477477188 |
19 | 1766446640 |
20 | 6560091544 |
21 | 24446776958 |
22 | 91389820234 |
23 | 342624437057 |
24 | 1287886748877 |
25 | 4852692487519 |
26 | 18325298874477 |
27 | 69344013520559 |
[1,1,2,5,14,42,132,429,1430,4862,16796,58785, 208010,742873,2674282,9693840,35351966,129613793, 477477188,1766446640,6560091544,24446776958, 91389820234,342624437057,1287886748877, 4852692487519,18325298874477,69344013520559] |