n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 25 |
4 | 113 |
5 | 608 |
6 | 3535 |
7 | 21844 |
8 | 141809 |
9 | 959882 |
10 | 6738850 |
11 | 48877221 |
12 | 365145267 |
13 | 2803002587 |
14 | 22066904802 |
15 | 177881536038 |
16 | 1466278969213 |
17 | 12345543329079 |
18 | 106069531868783 |
19 | 929158597546721 |
20 | 8292429187449462 |
21 | 75348425058995464 |
[1,1,5,25,113,608,3535,21844,141809,959882, 6738850,48877221,365145267,2803002587,22066904802, 177881536038,1466278969213,12345543329079, 106069531868783,929158597546721,8292429187449462, 75348425058995464] |