n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 12 |
5 | 58 |
6 | 333 |
7 | 2233 |
8 | 17225 |
9 | 150104 |
10 | 1458150 |
11 | 15623032 |
12 | 183012659 |
13 | 2326875239 |
14 | 31911431853 |
15 | 469553925838 |
16 | 7378704548888 |
17 | 123329776031415 |
18 | 2184698889699346 |
19 | 40885079221516335 |
20 | 806020133224179176 |
[1,1,1,3,12,58,333,2233,17225,150104,1458150, 15623032,183012659,2326875239,31911431853, 469553925838,7378704548888,123329776031415, 2184698889699346,40885079221516335, 806020133224179176] |