n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 22 |
4 | 68 |
5 | 202 |
6 | 608 |
7 | 1822 |
8 | 5468 |
9 | 16402 |
10 | 49208 |
11 | 147622 |
12 | 442868 |
13 | 1328602 |
14 | 3985808 |
15 | 11957422 |
16 | 35872268 |
17 | 107616802 |
18 | 322850408 |
19 | 968551222 |
20 | 2905653668 |
21 | 8716961002 |
22 | 26150883008 |
23 | 78452649022 |
24 | 235357947068 |
25 | 706073841202 |
26 | 2118221523608 |
27 | 6354664570822 |
28 | 19063993712468 |
[1,2,8,22,68,202,608,1822,5468,16402,49208,147622, 442868,1328602,3985808,11957422,35872268, 107616802,322850408,968551222,2905653668, 8716961002,26150883008,78452649022,235357947068, 706073841202,2118221523608,6354664570822, 19063993712468] |