n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 51 |
6 | 169 |
7 | 564 |
8 | 2046 |
9 | 7548 |
10 | 28355 |
11 | 106596 |
12 | 411047 |
13 | 1612830 |
14 | 6399150 |
15 | 25472182 |
16 | 102322757 |
17 | 415580010 |
18 | 1702115777 |
19 | 6999101160 |
20 | 28909694958 |
21 | 120178955216 |
22 | 502695571138 |
23 | 2110933288776 |
24 | 8891383171714 |
25 | 37597524503463 |
26 | 159682804500152 |
27 | 680544335825135 |
28 | 2907712571031676 |
[1,1,2,5,16,51,169,564,2046,7548,28355,106596, 411047,1612830,6399150,25472182,102322757, 415580010,1702115777,6999101160,28909694958, 120178955216,502695571138,2110933288776, 8891383171714,37597524503463,159682804500152, 680544335825135,2907712571031676] |