n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 7 |
8 | 28 |
9 | 84 |
10 | 210 |
11 | 462 |
12 | 924 |
13 | 1758 |
14 | 3444 |
15 | 7602 |
16 | 19278 |
17 | 52458 |
18 | 142044 |
19 | 368130 |
20 | 905136 |
21 | 2130198 |
22 | 4895919 |
23 | 11280885 |
24 | 26685540 |
25 | 65491062 |
26 | 165584034 |
27 | 423910572 |
28 | 1080774261 |
29 | 2717940687 |
30 | 6731334225 |
31 | 16494155097 |
32 | 40308269022 |
[1,1,1,1,1,1,1,7,28,84,210,462,924,1758,3444,7602, 19278,52458,142044,368130,905136,2130198,4895919, 11280885,26685540,65491062,165584034,423910572, 1080774261,2717940687,6731334225,16494155097, 40308269022] |