n | a(n) |
---|---|
6 | 0 |
7 | 1 |
8 | 1 |
9 | 3 |
10 | 8 |
11 | 22 |
12 | 60 |
13 | 168 |
14 | 466 |
15 | 1306 |
16 | 3677 |
17 | 10400 |
18 | 29503 |
19 | 83964 |
20 | 239523 |
21 | 684855 |
22 | 1961933 |
23 | 5630300 |
24 | 16182535 |
25 | 46576693 |
26 | 134225427 |
27 | 387254945 |
28 | 1118433179 |
29 | 3233228736 |
30 | 9354963666 |
31 | 27089288339 |
32 | 78501221909 |
33 | 227643444368 |
34 | 660560681614 |
35 | 1917918979943 |
36 | 5571738217340 |
[0,1,1,3,8,22,60,168,466,1306,3677,10400,29503, 83964,239523,684855,1961933,5630300,16182535, 46576693,134225427,387254945,1118433179, 3233228736,9354963666,27089288339,78501221909, 227643444368,660560681614,1917918979943, 5571738217340] |