n | a(n) |
---|---|
1 | 0 |
2 | 5 |
3 | 30 |
4 | 175 |
5 | 1020 |
6 | 5945 |
7 | 34650 |
8 | 201955 |
9 | 1177080 |
10 | 6860525 |
11 | 39986070 |
12 | 233055895 |
13 | 1358349300 |
14 | 7917039905 |
15 | 46143890130 |
16 | 268946300875 |
17 | 1567533915120 |
18 | 9136257189845 |
19 | 53250009223950 |
20 | 310363798153855 |
21 | 1808932779699180 |
22 | 10543232880041225 |
23 | 61450464500548170 |
[0,5,30,175,1020,5945,34650,201955,1177080, 6860525,39986070,233055895,1358349300,7917039905, 46143890130,268946300875,1567533915120, 9136257189845,53250009223950,310363798153855, 1808932779699180,10543232880041225, 61450464500548170] |