n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 8 |
4 | 17 |
5 | 38 |
6 | 90 |
7 | 225 |
8 | 593 |
9 | 1642 |
10 | 4762 |
11 | 14418 |
12 | 45443 |
13 | 148713 |
14 | 504149 |
15 | 1766929 |
16 | 6390719 |
17 | 23815167 |
18 | 91306967 |
19 | 359694456 |
20 | 1454213025 |
21 | 6027213530 |
22 | 25583995336 |
23 | 111118605582 |
24 | 493407322279 |
25 | 2238131105769 |
26 | 10363617299669 |
27 | 48954143141360 |
[1,2,4,8,17,38,90,225,593,1642,4762,14418,45443, 148713,504149,1766929,6390719,23815167,91306967, 359694456,1454213025,6027213530,25583995336, 111118605582,493407322279,2238131105769, 10363617299669,48954143141360] |