n | a(n) |
---|---|
3 | 1 |
4 | 4 |
5 | 14 |
6 | 44 |
7 | 144 |
8 | 414 |
9 | 1348 |
10 | 3187 |
11 | 11000 |
12 | 67699 |
13 | 242110 |
14 | 907470 |
15 | 4048716 |
16 | 15792744 |
17 | 61270714 |
18 | 251463726 |
19 | 996295359 |
20 | 3916971576 |
21 | 15685208519 |
22 | 62232260683 |
23 | 245848928006 |
24 | 977038778501 |
25 | 3873954187845 |
26 | 15330413916232 |
[1,4,14,44,144,414,1348,3187,11000,67699,242110, 907470,4048716,15792744,61270714,251463726, 996295359,3916971576,15685208519,62232260683, 245848928006,977038778501,3873954187845, 15330413916232] |