n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 0 |
4 | 1 |
5 | 1 |
6 | 3 |
7 | 4 |
8 | 11 |
9 | 20 |
10 | 51 |
11 | 108 |
12 | 267 |
13 | 619 |
14 | 1541 |
15 | 3762 |
16 | 9497 |
17 | 23907 |
18 | 61216 |
19 | 157211 |
20 | 407919 |
21 | 1063398 |
22 | 2792026 |
23 | 7365532 |
24 | 19535887 |
25 | 52037837 |
26 | 139213244 |
27 | 373820978 |
28 | 1007420841 |
29 | 2723783122 |
30 | 7387129661 |
31 | 20091790330 |
32 | 54793762295 |
33 | 149808274055 |
34 | 410553630946 |
[0,0,1,0,1,1,3,4,11,20,51,108,267,619,1541,3762, 9497,23907,61216,157211,407919,1063398,2792026, 7365532,19535887,52037837,139213244,373820978, 1007420841,2723783122,7387129661,20091790330, 54793762295,149808274055,410553630946] |