n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 30 |
4 | 95 |
5 | 326 |
6 | 1195 |
7 | 4478 |
8 | 17251 |
9 | 67326 |
10 | 266331 |
11 | 1058146 |
12 | 4216075 |
13 | 16808282 |
14 | 67130923 |
15 | 268281390 |
16 | 1072424939 |
[1,3,9,30,95,326,1195,4478,17251,67326,266331, 1058146,4216075,16808282,67130923,268281390, 1072424939] |