n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 76 |
7 | 232 |
8 | 764 |
9 | 2388 |
10 | 7280 |
11 | 21574 |
12 | 63162 |
13 | 183286 |
14 | 531576 |
15 | 1545583 |
16 | 4523049 |
17 | 13283748 |
18 | 39091824 |
19 | 115105436 |
20 | 338866164 |
21 | 996931680 |
22 | 2930722336 |
23 | 8610252768 |
24 | 25290067376 |
25 | 74279609504 |
26 | 218185834860 |
27 | 640968565724 |
28 | 1883199406468 |
29 | 5533359251576 |
[1,1,2,4,10,26,76,232,764,2388,7280,21574,63162, 183286,531576,1545583,4523049,13283748,39091824, 115105436,338866164,996931680,2930722336, 8610252768,25290067376,74279609504,218185834860, 640968565724,1883199406468,5533359251576] |