n | a(n) |
---|---|
9 | 0 |
10 | 1 |
11 | 1 |
12 | 3 |
13 | 8 |
14 | 22 |
15 | 60 |
16 | 167 |
17 | 465 |
18 | 1306 |
19 | 3682 |
20 | 10423 |
21 | 29597 |
22 | 84309 |
23 | 240735 |
24 | 688941 |
25 | 1975403 |
26 | 5673911 |
27 | 16322021 |
28 | 47018394 |
29 | 135613559 |
30 | 391590017 |
31 | 1131902426 |
32 | 3274897873 |
33 | 9483405008 |
34 | 27483957321 |
35 | 79710659583 |
36 | 231340894684 |
37 | 671840776074 |
38 | 1952268143504 |
39 | 5676161896298 |
[0,1,1,3,8,22,60,167,465,1306,3682,10423,29597, 84309,240735,688941,1975403,5673911,16322021, 47018394,135613559,391590017,1131902426, 3274897873,9483405008,27483957321,79710659583, 231340894684,671840776074,1952268143504, 5676161896298] |