n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 8 |
4 | 48 |
5 | 382 |
6 | 3793 |
7 | 45208 |
8 | 627957 |
9 | 9928646 |
10 | 175476102 |
11 | 3420270423 |
12 | 72789704826 |
13 | 1678446235555 |
14 | 41675807453127 |
15 | 1108522434288617 |
16 | 31444611938560078 |
17 | 947522959703143140 |
18 | 30225484159719768548 |
19 | 1017558928058932606182 |
20 | 36053690169955373601165 |
21 | 1341103168079733579768368 |
[1,1,2,8,48,382,3793,45208,627957,9928646, 175476102,3420270423,72789704826,1678446235555, 41675807453127,1108522434288617,31444611938560078, 947522959703143140,30225484159719768548, 1017558928058932606182,36053690169955373601165, 1341103168079733579768368] |