n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 5 |
6 | 8 |
7 | 40 |
8 | 96 |
9 | 297 |
10 | 1269 |
11 | 3456 |
12 | 12839 |
13 | 46691 |
14 | 153111 |
15 | 577167 |
16 | 2054576 |
17 | 7602937 |
18 | 29000337 |
19 | 110645967 |
20 | 418889453 |
21 | 1580667760 |
22 | 6058528796 |
23 | 23121913246 |
24 | 89793473393 |
25 | 350029321425 |
26 | 1359919742613 |
27 | 5340642744919 |
28 | 20948242218543 |
29 | 82505892314268 |
[1,1,0,0,1,5,8,40,96,297,1269,3456,12839,46691, 153111,577167,2054576,7602937,29000337,110645967, 418889453,1580667760,6058528796,23121913246, 89793473393,350029321425,1359919742613, 5340642744919,20948242218543,82505892314268] |