n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 18 |
5 | 42 |
6 | 104 |
7 | 244 |
8 | 585 |
9 | 1373 |
10 | 3233 |
11 | 7533 |
12 | 17547 |
13 | 40591 |
14 | 93711 |
15 | 215379 |
16 | 493735 |
17 | 1127979 |
18 | 2570519 |
19 | 5841443 |
20 | 13243599 |
21 | 29953851 |
22 | 67604035 |
23 | 152258271 |
24 | 342253980 |
25 | 767895424 |
26 | 1719854346 |
27 | 3845443858 |
[1,1,3,7,18,42,104,244,585,1373,3233,7533,17547, 40591,93711,215379,493735,1127979,2570519,5841443, 13243599,29953851,67604035,152258271,342253980, 767895424,1719854346,3845443858] |