n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 10 |
5 | 30 |
6 | 99 |
7 | 335 |
8 | 1144 |
9 | 3978 |
10 | 14000 |
11 | 49742 |
12 | 178296 |
13 | 643856 |
14 | 2340135 |
15 | 8554275 |
16 | 31429068 |
17 | 115997970 |
18 | 429874830 |
19 | 1598952498 |
20 | 5967382200 |
21 | 22338765540 |
22 | 83859016956 |
23 | 315614844558 |
24 | 1190680751376 |
25 | 4501802224520 |
26 | 17055399281284 |
[1,1,3,10,30,99,335,1144,3978,14000,49742,178296, 643856,2340135,8554275,31429068,115997970, 429874830,1598952498,5967382200,22338765540, 83859016956,315614844558,1190680751376, 4501802224520,17055399281284] |