n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 15 |
4 | 45 |
5 | 151 |
6 | 549 |
7 | 2083 |
8 | 8133 |
9 | 32487 |
10 | 132141 |
11 | 545299 |
12 | 2277021 |
13 | 9603111 |
14 | 40844629 |
15 | 174997363 |
16 | 754562037 |
17 | 3271847975 |
18 | 14257744125 |
19 | 62407576979 |
20 | 274256671949 |
21 | 1209604653095 |
22 | 5352444701861 |
23 | 23755193862131 |
[1,1,5,15,45,151,549,2083,8133,32487,132141, 545299,2277021,9603111,40844629,174997363, 754562037,3271847975,14257744125,62407576979, 274256671949,1209604653095,5352444701861, 23755193862131] |