n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 8 |
5 | 20 |
6 | 58 |
7 | 179 |
8 | 576 |
9 | 1902 |
10 | 6426 |
11 | 22092 |
12 | 77026 |
13 | 271702 |
14 | 967840 |
15 | 3476555 |
16 | 12578728 |
17 | 45800278 |
18 | 167693698 |
19 | 617037126 |
20 | 2280467586 |
21 | 8461771342 |
22 | 31510700712 |
23 | 117725789124 |
24 | 441141656810 |
25 | 1657559677646 |
26 | 6243810767912 |
[1,1,2,3,8,20,58,179,576,1902,6426,22092,77026, 271702,967840,3476555,12578728,45800278,167693698, 617037126,2280467586,8461771342,31510700712, 117725789124,441141656810,1657559677646, 6243810767912] |