n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 20 |
6 | 70 |
7 | 256 |
8 | 969 |
9 | 3762 |
10 | 14894 |
11 | 59904 |
12 | 244088 |
13 | 1005452 |
14 | 4180096 |
15 | 17516936 |
16 | 73913705 |
17 | 313774854 |
18 | 1339162028 |
19 | 5742691704 |
20 | 24731501410 |
21 | 106919054880 |
22 | 463844340060 |
23 | 2018673093000 |
24 | 8810852089650 |
25 | 38558866555248 |
[1,1,2,6,20,70,256,969,3762,14894,59904,244088, 1005452,4180096,17516936,73913705,313774854, 1339162028,5742691704,24731501410,106919054880, 463844340060,2018673093000,8810852089650, 38558866555248] |