n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 26 |
4 | 72 |
5 | 192 |
6 | 496 |
7 | 1248 |
8 | 3072 |
9 | 7424 |
10 | 17664 |
11 | 41472 |
12 | 96256 |
13 | 221184 |
14 | 503808 |
15 | 1138688 |
16 | 2555904 |
17 | 5701632 |
18 | 12648448 |
19 | 27918336 |
20 | 61341696 |
21 | 134217728 |
22 | 292552704 |
23 | 635437056 |
24 | 1375731712 |
25 | 2969567232 |
26 | 6392119296 |
27 | 13723762688 |
[1,3,9,26,72,192,496,1248,3072,7424,17664,41472, 96256,221184,503808,1138688,2555904,5701632, 12648448,27918336,61341696,134217728,292552704, 635437056,1375731712,2969567232,6392119296, 13723762688] |