n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 12 |
6 | 35 |
7 | 133 |
8 | 497 |
9 | 2256 |
10 | 10123 |
11 | 53131 |
12 | 276210 |
13 | 1638039 |
14 | 9639943 |
15 | 63526677 |
16 | 416194299 |
17 | 3009639922 |
18 | 21672348693 |
19 | 170290649517 |
20 | 1334332599748 |
21 | 11302630861664 |
22 | 95587196023618 |
23 | 867197921850406 |
24 | 7862652321850812 |
25 | 75983785567389333 |
26 | 734442008292947615 |
[1,1,1,2,4,12,35,133,497,2256,10123,53131,276210, 1638039,9639943,63526677,416194299,3009639922, 21672348693,170290649517,1334332599748, 11302630861664,95587196023618,867197921850406, 7862652321850812,75983785567389333, 734442008292947615] |