n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 0 |
8 | 2 |
9 | 6 |
10 | 14 |
11 | 23 |
12 | 51 |
13 | 108 |
14 | 228 |
15 | 511 |
16 | 1158 |
17 | 2500 |
18 | 5603 |
19 | 12304 |
20 | 26969 |
21 | 59222 |
22 | 130115 |
23 | 285370 |
24 | 624965 |
25 | 1368603 |
26 | 2987117 |
27 | 6517822 |
28 | 14187920 |
29 | 30823278 |
30 | 66834822 |
31 | 144671698 |
32 | 312551894 |
33 | 673913968 |
34 | 1450292087 |
35 | 3114720013 |
36 | 6676277754 |
37 | 14281662079 |
[1,1,0,0,0,0,1,0,2,6,14,23,51,108,228,511,1158, 2500,5603,12304,26969,59222,130115,285370,624965, 1368603,2987117,6517822,14187920,30823278, 66834822,144671698,312551894,673913968,1450292087, 3114720013,6676277754,14281662079] |