n | a(n) |
---|---|
4 | 1 |
5 | 0 |
6 | 3 |
7 | 7 |
8 | 7 |
9 | 21 |
10 | 50 |
11 | 77 |
12 | 164 |
13 | 364 |
14 | 672 |
15 | 1330 |
16 | 2787 |
17 | 5474 |
18 | 10797 |
19 | 21945 |
20 | 43841 |
21 | 87031 |
22 | 174812 |
23 | 350175 |
24 | 698302 |
25 | 1397550 |
26 | 2798250 |
27 | 5591460 |
28 | 11181661 |
29 | 22374660 |
30 | 44740503 |
31 | 89467147 |
32 | 178965787 |
33 | 357927801 |
34 | 715796390 |
35 | 1431659537 |
36 | 2863370744 |
37 | 5726556304 |
38 | 11453194452 |
[1,0,3,7,7,21,50,77,164,364,672,1330,2787,5474, 10797,21945,43841,87031,174812,350175,698302, 1397550,2798250,5591460,11181661,22374660, 44740503,89467147,178965787,357927801,715796390, 1431659537,2863370744,5726556304,11453194452] |