n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 12 |
5 | 36 |
6 | 152 |
7 | 624 |
8 | 3472 |
9 | 18256 |
10 | 126752 |
11 | 814144 |
12 | 6781632 |
13 | 51475776 |
14 | 500231552 |
15 | 4381112064 |
16 | 48656756992 |
17 | 482962852096 |
18 | 6034272215552 |
19 | 66942218896384 |
20 | 929327412759552 |
21 | 11394877025289216 |
22 | 174008703107274752 |
23 | 2336793875186479104 |
24 | 38928735228629389312 |
[1,1,2,4,12,36,152,624,3472,18256,126752,814144, 6781632,51475776,500231552,4381112064,48656756992, 482962852096,6034272215552,66942218896384, 929327412759552,11394877025289216, 174008703107274752,2336793875186479104, 38928735228629389312] |