n | a(n) |
---|---|
0 | 2 |
1 | 3 |
2 | 12 |
3 | 65 |
4 | 374 |
5 | 2175 |
6 | 12672 |
7 | 73853 |
8 | 430442 |
9 | 2508795 |
10 | 14622324 |
11 | 85225145 |
12 | 496728542 |
13 | 2895146103 |
14 | 16874148072 |
15 | 98349742325 |
16 | 573224305874 |
17 | 3340996092915 |
18 | 19472752251612 |
19 | 113495517416753 |
20 | 661500352248902 |
21 | 3855506596076655 |
22 | 22471539224211024 |
[2,3,12,65,374,2175,12672,73853,430442,2508795, 14622324,85225145,496728542,2895146103, 16874148072,98349742325,573224305874, 3340996092915,19472752251612,113495517416753, 661500352248902,3855506596076655, 22471539224211024] |