n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 11 |
3 | 43 |
4 | 173 |
5 | 707 |
6 | 2917 |
7 | 12111 |
8 | 50503 |
9 | 211263 |
10 | 885831 |
11 | 3720995 |
12 | 15652239 |
13 | 65913927 |
14 | 277822147 |
15 | 1171853635 |
16 | 4945846997 |
17 | 20884526283 |
18 | 88224662549 |
19 | 372827899079 |
20 | 1576001732485 |
21 | 6663706588179 |
22 | 28181895551161 |
23 | 119208323665543 |
24 | 504329070986033 |
25 | 2133944799315027 |
[1,3,11,43,173,707,2917,12111,50503,211263,885831, 3720995,15652239,65913927,277822147,1171853635, 4945846997,20884526283,88224662549,372827899079, 1576001732485,6663706588179,28181895551161, 119208323665543,504329070986033,2133944799315027] |