n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 1 |
6 | 1 |
7 | 4 |
8 | 6 |
9 | 16 |
10 | 25 |
11 | 52 |
12 | 89 |
13 | 175 |
14 | 308 |
15 | 593 |
16 | 1066 |
17 | 2031 |
18 | 3743 |
19 | 7124 |
20 | 13330 |
21 | 25445 |
22 | 48134 |
23 | 92160 |
24 | 175743 |
25 | 337541 |
26 | 647269 |
27 | 1246802 |
28 | 2400776 |
29 | 4636319 |
30 | 8955984 |
31 | 17334720 |
32 | 33570730 |
33 | 65107971 |
34 | 126355239 |
35 | 245492141 |
36 | 477284073 |
[0,0,1,0,1,1,4,6,16,25,52,89,175,308,593,1066, 2031,3743,7124,13330,25445,48134,92160,175743, 337541,647269,1246802,2400776,4636319,8955984, 17334720,33570730,65107971,126355239,245492141, 477284073] |