n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 1 |
6 | 1 |
7 | 2 |
8 | 2 |
9 | 4 |
10 | 6 |
11 | 10 |
12 | 16 |
13 | 27 |
14 | 46 |
15 | 77 |
16 | 131 |
17 | 224 |
18 | 391 |
19 | 672 |
20 | 1180 |
21 | 2050 |
22 | 3626 |
23 | 6344 |
24 | 11276 |
25 | 19863 |
26 | 35479 |
27 | 62828 |
28 | 112685 |
29 | 200462 |
30 | 360627 |
31 | 644199 |
32 | 1162296 |
33 | 2083572 |
34 | 3768866 |
35 | 6777314 |
36 | 12289160 |
37 | 22158106 |
38 | 40255496 |
39 | 72765144 |
40 | 132453122 |
41 | 239936528 |
42 | 437445448 |
[1,0,1,0,1,1,2,2,4,6,10,16,27,46,77,131,224,391, 672,1180,2050,3626,6344,11276,19863,35479,62828, 112685,200462,360627,644199,1162296,2083572, 3768866,6777314,12289160,22158106,40255496, 72765144,132453122,239936528,437445448] |