n | a(n) |
---|---|
3 | 1 |
4 | 0 |
5 | 3 |
6 | 2 |
7 | 10 |
8 | 14 |
9 | 40 |
10 | 74 |
11 | 176 |
12 | 358 |
13 | 798 |
14 | 1670 |
15 | 3626 |
16 | 7638 |
17 | 16366 |
18 | 34462 |
19 | 73230 |
20 | 153830 |
21 | 324896 |
22 | 680514 |
23 | 1430336 |
24 | 2987310 |
25 | 6253712 |
26 | 13025954 |
27 | 27176052 |
28 | 56465878 |
29 | 117458820 |
30 | 243507250 |
31 | 505239264 |
32 | 1045301486 |
[1,0,3,2,10,14,40,74,176,358,798,1670,3626,7638, 16366,34462,73230,153830,324896,680514,1430336, 2987310,6253712,13025954,27176052,56465878, 117458820,243507250,505239264,1045301486] |