n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 1 |
4 | 6 |
5 | 2 |
6 | 20 |
7 | 5 |
8 | 70 |
9 | 14 |
10 | 252 |
11 | 42 |
12 | 924 |
13 | 132 |
14 | 3432 |
15 | 429 |
16 | 12870 |
17 | 1430 |
18 | 48620 |
19 | 4862 |
20 | 184756 |
21 | 16796 |
22 | 705432 |
23 | 58786 |
24 | 2704156 |
25 | 208012 |
26 | 10400600 |
27 | 742900 |
28 | 40116600 |
29 | 2674440 |
30 | 155117520 |
31 | 9694845 |
32 | 601080390 |
33 | 35357670 |
34 | 2333606220 |
35 | 129644790 |
[1,1,2,1,6,2,20,5,70,14,252,42,924,132,3432,429, 12870,1430,48620,4862,184756,16796,705432,58786, 2704156,208012,10400600,742900,40116600,2674440, 155117520,9694845,601080390,35357670,2333606220, 129644790] |