n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 4 |
6 | 2 |
7 | 1 |
8 | 1 |
9 | 3 |
10 | 9 |
11 | 20 |
12 | 27 |
13 | 27 |
14 | 20 |
15 | 9 |
16 | 3 |
17 | 1 |
18 | 1 |
19 | 4 |
20 | 16 |
21 | 48 |
22 | 133 |
23 | 272 |
24 | 468 |
25 | 636 |
26 | 720 |
27 | 636 |
28 | 468 |
29 | 272 |
30 | 133 |
31 | 48 |
32 | 16 |
33 | 4 |
34 | 1 |
35 | 1 |
36 | 5 |
37 | 25 |
38 | 95 |
39 | 330 |
40 | 1027 |
41 | 2780 |
42 | 6550 |
43 | 13375 |
44 | 23700 |
45 | 36403 |
46 | 48405 |
47 | 55800 |
48 | 55800 |
49 | 48405 |
50 | 36403 |
51 | 23700 |
52 | 13375 |
53 | 6550 |
54 | 2780 |
55 | 1027 |
56 | 330 |
57 | 95 |
58 | 25 |
59 | 5 |
60 | 1 |
[1,1,1,1,2,4,2,1,1,3,9,20,27,27,20,9,3,1,1,4,16, 48,133,272,468,636,720,636,468,272,133,48,16,4,1, 1,5,25,95,330,1027,2780,6550,13375,23700,36403, 48405,55800,55800,48405,36403,23700,13375,6550, 2780,1027,330,95,25,5,1] |