n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 28 |
6 | 89 |
7 | 287 |
8 | 935 |
9 | 3072 |
10 | 10157 |
11 | 33767 |
12 | 112736 |
13 | 377836 |
14 | 1270203 |
15 | 4282311 |
16 | 14470629 |
17 | 49005732 |
18 | 166261653 |
19 | 565055147 |
20 | 1923186472 |
21 | 6554868916 |
22 | 22367933148 |
23 | 76417819396 |
24 | 261335128098 |
25 | 894597454360 |
26 | 3064970675173 |
[1,1,3,9,28,89,287,935,3072,10157,33767,112736, 377836,1270203,4282311,14470629,49005732, 166261653,565055147,1923186472,6554868916, 22367933148,76417819396,261335128098,894597454360, 3064970675173] |