n | a(n) |
---|---|
1 | 6 |
2 | 5 |
3 | 6 |
4 | 9 |
5 | 20 |
6 | 75 |
7 | 414 |
8 | 2849 |
9 | 22728 |
10 | 204471 |
11 | 2044610 |
12 | 22490589 |
13 | 269886924 |
14 | 3508529843 |
15 | 49119417606 |
16 | 736791263865 |
17 | 11788660221584 |
18 | 200407223766639 |
19 | 3607330027799178 |
20 | 68539270528184021 |
21 | 1370785410563680020 |
[6,5,6,9,20,75,414,2849,22728,204471,2044610, 22490589,269886924,3508529843,49119417606, 736791263865,11788660221584,200407223766639, 3607330027799178,68539270528184021, 1370785410563680020] |