n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 17 |
5 | 186 |
6 | 1552 |
7 | 19251 |
8 | 218745 |
9 | 3156250 |
10 | 45156986 |
11 | 759167421 |
12 | 13081892540 |
13 | 253473235549 |
14 | 5105981313721 |
15 | 112582925665944 |
16 | 2594769928231945 |
17 | 64333665380435714 |
18 | 1669153290412964962 |
19 | 46044314009644973181 |
20 | 1327862271936474871422 |
21 | 40379182417276002300375 |
[1,1,4,17,186,1552,19251,218745,3156250,45156986, 759167421,13081892540,253473235549,5105981313721, 112582925665944,2594769928231945, 64333665380435714,1669153290412964962, 46044314009644973181,1327862271936474871422, 40379182417276002300375] |