n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 1 |
6 | 3 |
7 | 1 |
8 | 9 |
9 | 10 |
10 | 20 |
11 | 42 |
12 | 64 |
13 | 126 |
14 | 251 |
15 | 440 |
16 | 828 |
17 | 1560 |
18 | 2967 |
19 | 5656 |
20 | 10769 |
21 | 20419 |
22 | 39327 |
23 | 74826 |
24 | 143516 |
25 | 276217 |
26 | 531587 |
27 | 1025104 |
28 | 1977596 |
29 | 3821827 |
30 | 7396083 |
31 | 14326142 |
32 | 27774012 |
33 | 53875302 |
34 | 104653661 |
35 | 203380716 |
[0,0,0,1,1,3,1,9,10,20,42,64,126,251,440,828,1560, 2967,5656,10769,20419,39327,74826,143516,276217, 531587,1025104,1977596,3821827,7396083,14326142, 27774012,53875302,104653661,203380716] |