n | a(n) |
---|---|
3 | 0 |
4 | 0 |
5 | 6 |
6 | 6 |
7 | 6 |
8 | 27 |
9 | 52 |
10 | 105 |
11 | 280 |
12 | 592 |
13 | 1428 |
14 | 3653 |
15 | 8294 |
16 | 20587 |
17 | 52878 |
18 | 130568 |
19 | 331526 |
20 | 859744 |
21 | 2219252 |
22 | 5778757 |
23 | 15171768 |
24 | 39925520 |
25 | 105556976 |
26 | 279913825 |
27 | 743392894 |
28 | 1979348991 |
29 | 5279012264 |
30 | 14094315773 |
31 | 37689916670 |
[0,0,6,6,6,27,52,105,280,592,1428,3653,8294,20587, 52878,130568,331526,859744,2219252,5778757, 15171768,39925520,105556976,279913825,743392894, 1979348991,5279012264,14094315773,37689916670] |