n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 18 |
3 | 62 |
4 | 212 |
5 | 724 |
6 | 2472 |
7 | 8440 |
8 | 28816 |
9 | 98384 |
10 | 335904 |
11 | 1146848 |
12 | 3915584 |
13 | 13368640 |
14 | 45643392 |
15 | 155836288 |
16 | 532058368 |
17 | 1816560896 |
18 | 6202126848 |
19 | 21175385600 |
20 | 72297288704 |
21 | 246838383616 |
22 | 842758957056 |
23 | 2877359060992 |
[1,5,18,62,212,724,2472,8440,28816,98384,335904, 1146848,3915584,13368640,45643392,155836288, 532058368,1816560896,6202126848,21175385600, 72297288704,246838383616,842758957056, 2877359060992] |