n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 2 |
4 | 7 |
5 | 17 |
6 | 39 |
7 | 88 |
8 | 192 |
9 | 408 |
10 | 855 |
11 | 1775 |
12 | 3655 |
13 | 7478 |
14 | 15228 |
15 | 30898 |
16 | 62511 |
17 | 126177 |
18 | 254223 |
19 | 511472 |
20 | 1027840 |
21 | 2063600 |
22 | 4140015 |
23 | 8300767 |
24 | 16635087 |
25 | 33324462 |
26 | 66736764 |
27 | 133615658 |
28 | 267461287 |
29 | 535294673 |
30 | 1071191415 |
31 | 2143357000 |
32 | 4288290240 |
33 | 8579130888 |
[0,0,0,2,7,17,39,88,192,408,855,1775,3655,7478, 15228,30898,62511,126177,254223,511472,1027840, 2063600,4140015,8300767,16635087,33324462, 66736764,133615658,267461287,535294673,1071191415, 2143357000,4288290240,8579130888] |