n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 6 |
6 | 4 |
7 | 4 |
8 | 28 |
9 | 40 |
10 | 96 |
11 | 266 |
12 | 520 |
13 | 1376 |
14 | 3578 |
15 | 8040 |
16 | 20244 |
17 | 52804 |
18 | 131856 |
19 | 336856 |
20 | 878640 |
21 | 2280798 |
22 | 5949486 |
23 | 15628144 |
24 | 41156256 |
25 | 108761684 |
26 | 288173740 |
27 | 764922754 |
28 | 2035170824 |
29 | 5423784708 |
30 | 14473513958 |
31 | 38687761450 |
[0,0,6,4,4,28,40,96,266,520,1376,3578,8040,20244, 52804,131856,336856,878640,2280798,5949486, 15628144,41156256,108761684,288173740,764922754, 2035170824,5423784708,14473513958,38687761450] |