n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 0 |
4 | 1 |
5 | 1 |
6 | 4 |
7 | 6 |
8 | 14 |
9 | 28 |
10 | 60 |
11 | 125 |
12 | 263 |
13 | 558 |
14 | 1181 |
15 | 2513 |
16 | 5339 |
17 | 11392 |
18 | 24290 |
19 | 51926 |
20 | 111017 |
21 | 237757 |
22 | 509404 |
23 | 1092713 |
24 | 2345256 |
25 | 5038015 |
26 | 10828720 |
27 | 23291759 |
28 | 50126055 |
29 | 107939753 |
30 | 232550011 |
31 | 501270200 |
32 | 1080996244 |
33 | 2332221316 |
34 | 5033764628 |
35 | 10868950676 |
36 | 23476998980 |
37 | 50728408182 |
38 | 109649040738 |
39 | 237081174662 |
40 | 512767906801 |
41 | 1109354495908 |
[0,1,0,1,1,4,6,14,28,60,125,263,558,1181,2513, 5339,11392,24290,51926,111017,237757,509404, 1092713,2345256,5038015,10828720,23291759, 50126055,107939753,232550011,501270200,1080996244, 2332221316,5033764628,10868950676,23476998980, 50728408182,109649040738,237081174662, 512767906801,1109354495908] |