n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 14 |
4 | 34 |
5 | 84 |
6 | 208 |
7 | 518 |
8 | 1296 |
9 | 3254 |
10 | 8196 |
11 | 20700 |
12 | 52404 |
13 | 132942 |
14 | 337878 |
15 | 860142 |
16 | 2192902 |
17 | 5598144 |
18 | 14308378 |
19 | 36610970 |
20 | 93770358 |
21 | 240390602 |
22 | 616787116 |
23 | 1583765724 |
24 | 4069672444 |
25 | 10464501074 |
26 | 26924530158 |
27 | 69315481778 |
28 | 178545361842 |
29 | 460138256784 |
[1,2,6,14,34,84,208,518,1296,3254,8196,20700, 52404,132942,337878,860142,2192902,5598144, 14308378,36610970,93770358,240390602,616787116, 1583765724,4069672444,10464501074,26924530158, 69315481778,178545361842,460138256784] |