n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 30 |
6 | 100 |
7 | 376 |
8 | 1566 |
9 | 7094 |
10 | 34751 |
11 | 182841 |
12 | 1026167 |
13 | 6112799 |
14 | 38489481 |
15 | 255204077 |
16 | 1776046697 |
17 | 12936265145 |
18 | 98368170749 |
19 | 779127467795 |
20 | 6414876317675 |
21 | 54802126603135 |
22 | 484967246285755 |
23 | 4438877330941077 |
24 | 41963817964950737 |
25 | 409224941931240185 |
[1,1,2,4,10,30,100,376,1566,7094,34751,182841, 1026167,6112799,38489481,255204077,1776046697, 12936265145,98368170749,779127467795, 6414876317675,54802126603135,484967246285755, 4438877330941077,41963817964950737, 409224941931240185] |