n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 1 |
6 | 0 |
7 | 0 |
8 | 2 |
9 | 4 |
10 | 2 |
11 | 0 |
12 | 5 |
13 | 15 |
14 | 15 |
15 | 5 |
16 | 14 |
17 | 56 |
18 | 84 |
19 | 56 |
20 | 56 |
21 | 210 |
22 | 420 |
23 | 420 |
24 | 342 |
25 | 834 |
26 | 1980 |
27 | 2640 |
28 | 2409 |
29 | 3795 |
30 | 9141 |
31 | 15015 |
32 | 16445 |
33 | 20449 |
34 | 43043 |
35 | 80509 |
36 | 104962 |
37 | 123838 |
38 | 215072 |
39 | 419848 |
40 | 630838 |
41 | 780572 |
42 | 1164228 |
43 | 2190552 |
44 | 3629704 |
45 | 4884100 |
46 | 6760390 |
47 | 11715210 |
[1,0,0,0,1,1,0,0,2,4,2,0,5,15,15,5,14,56,84,56,56, 210,420,420,342,834,1980,2640,2409,3795,9141, 15015,16445,20449,43043,80509,104962,123838, 215072,419848,630838,780572,1164228,2190552, 3629704,4884100,6760390,11715210] |