n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 3 |
6 | 2 |
7 | 11 |
8 | 17 |
9 | 55 |
10 | 107 |
11 | 317 |
12 | 720 |
13 | 1938 |
14 | 4803 |
15 | 12707 |
16 | 32311 |
17 | 85168 |
18 | 220879 |
19 | 581112 |
20 | 1522095 |
21 | 4014186 |
22 | 10568936 |
23 | 27934075 |
24 | 73826753 |
25 | 195497427 |
26 | 517927859 |
27 | 1373858931 |
28 | 3646158317 |
29 | 9684878325 |
30 | 25737819213 |
31 | 68439951884 |
32 | 182070121870 |
33 | 484583900955 |
34 | 1290213371950 |
[1,0,1,0,3,2,11,17,55,107,317,720,1938,4803,12707, 32311,85168,220879,581112,1522095,4014186, 10568936,27934075,73826753,195497427,517927859, 1373858931,3646158317,9684878325,25737819213, 68439951884,182070121870,484583900955, 1290213371950] |