n | a(n) |
---|---|
1 | 2 |
2 | 8 |
3 | 30 |
4 | 112 |
5 | 420 |
6 | 1572 |
7 | 5888 |
8 | 22048 |
9 | 82568 |
10 | 309200 |
11 | 1157904 |
12 | 4336144 |
13 | 16238112 |
14 | 60808896 |
15 | 227718752 |
16 | 852767104 |
17 | 3193464512 |
18 | 11958969152 |
19 | 44784259584 |
20 | 167709263104 |
21 | 628042022016 |
22 | 2351908141824 |
23 | 8807486941952 |
24 | 32982506778880 |
[2,8,30,112,420,1572,5888,22048,82568,309200, 1157904,4336144,16238112,60808896,227718752, 852767104,3193464512,11958969152,44784259584, 167709263104,628042022016,2351908141824, 8807486941952,32982506778880] |