n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 22 |
5 | 86 |
6 | 340 |
7 | 1340 |
8 | 5254 |
9 | 20518 |
10 | 79932 |
11 | 311028 |
12 | 1209916 |
13 | 4707964 |
14 | 18330728 |
15 | 71429176 |
16 | 278586182 |
17 | 1087537414 |
18 | 4249391468 |
19 | 16618640836 |
20 | 65048019092 |
21 | 254814326164 |
22 | 998953992728 |
23 | 3919041821896 |
24 | 15385395144092 |
25 | 60438585676636 |
[1,1,2,6,22,86,340,1340,5254,20518,79932,311028, 1209916,4707964,18330728,71429176,278586182, 1087537414,4249391468,16618640836,65048019092, 254814326164,998953992728,3919041821896, 15385395144092,60438585676636] |