n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 5 |
6 | 13 |
7 | 35 |
8 | 95 |
9 | 255 |
10 | 715 |
11 | 2081 |
12 | 6003 |
13 | 17645 |
14 | 52127 |
15 | 155863 |
16 | 468129 |
17 | 1415521 |
18 | 4301055 |
19 | 13134789 |
20 | 40275109 |
21 | 123970669 |
22 | 382919917 |
23 | 1186475687 |
24 | 3686899725 |
25 | 11487023793 |
26 | 35876838669 |
27 | 112304155021 |
28 | 352276801491 |
[1,1,1,3,5,13,35,95,255,715,2081,6003,17645,52127, 155863,468129,1415521,4301055,13134789,40275109, 123970669,382919917,1186475687,3686899725, 11487023793,35876838669,112304155021,352276801491] |