n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 2 |
3 | 6 |
4 | 2 |
5 | 6 |
6 | 20 |
7 | 4 |
8 | 4 |
9 | 20 |
10 | 70 |
11 | 10 |
12 | 6 |
13 | 10 |
14 | 70 |
15 | 252 |
16 | 28 |
17 | 12 |
18 | 12 |
19 | 28 |
20 | 252 |
21 | 924 |
22 | 84 |
23 | 28 |
24 | 20 |
25 | 28 |
26 | 84 |
27 | 924 |
28 | 3432 |
29 | 264 |
30 | 72 |
31 | 40 |
32 | 40 |
33 | 72 |
34 | 264 |
35 | 3432 |
36 | 12870 |
37 | 858 |
38 | 198 |
39 | 90 |
40 | 70 |
41 | 90 |
42 | 198 |
43 | 858 |
44 | 12870 |
45 | 48620 |
46 | 2860 |
47 | 572 |
48 | 220 |
49 | 140 |
50 | 140 |
51 | 220 |
52 | 572 |
53 | 2860 |
54 | 48620 |
55 | 184756 |
56 | 9724 |
[1,2,2,6,2,6,20,4,4,20,70,10,6,10,70,252,28,12,12, 28,252,924,84,28,20,28,84,924,3432,264,72,40,40, 72,264,3432,12870,858,198,90,70,90,198,858,12870, 48620,2860,572,220,140,140,220,572,2860,48620, 184756,9724] |