n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 32 |
4 | 107 |
5 | 347 |
6 | 1108 |
7 | 3515 |
8 | 11132 |
9 | 35219 |
10 | 111391 |
11 | 352269 |
12 | 1113996 |
13 | 3522791 |
14 | 11140072 |
15 | 35228031 |
16 | 111400846 |
17 | 352280442 |
18 | 1114008610 |
19 | 3522804578 |
20 | 11140086260 |
[1,2,9,32,107,347,1108,3515,11132,35219,111391, 352269,1113996,3522791,11140072,35228031, 111400846,352280442,1114008610,3522804578, 11140086260] |