n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 9 |
8 | 15 |
9 | 35 |
10 | 57 |
11 | 245 |
12 | 579 |
13 | 3057 |
14 | 8465 |
15 | 49975 |
16 | 173815 |
17 | 1305505 |
18 | 5674409 |
19 | 52338659 |
20 | 276967501 |
21 | 3125019047 |
22 | 20455456921 |
23 | 286529633207 |
24 | 2318729204115 |
[1,1,1,1,1,1,9,15,35,57,245,579,3057,8465,49975, 173815,1305505,5674409,52338659,276967501, 3125019047,20455456921,286529633207,2318729204115] |