n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 7 |
5 | 10 |
6 | 92 |
7 | 1099 |
8 | 29530 |
9 | 281473 |
10 | 657892 |
11 | 3313964 |
12 | 9816013 |
13 | 18669155396 |
14 | 94849225930 |
15 | 358676424226 |
16 | 957439868543 |
17 | 1586504109310 |
18 | 41431374800470 |
19 | 241469610359708 |
20 | 256165266592379 |
[1,2,4,7,10,92,1099,29530,281473,657892,3313964, 9816013,18669155396,94849225930,358676424226, 957439868543,1586504109310,41431374800470, 241469610359708,256165266592379] |