n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 36 |
6 | 109 |
7 | 340 |
8 | 1116 |
9 | 3744 |
10 | 12981 |
11 | 45722 |
12 | 165247 |
13 | 603242 |
14 | 2242932 |
15 | 8422438 |
16 | 32040585 |
17 | 122800802 |
18 | 475937009 |
[1,1,2,5,13,36,109,340,1116,3744,12981,45722, 165247,603242,2242932,8422438,32040585,122800802, 475937009] |