n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 14 |
4 | 48 |
5 | 144 |
6 | 482 |
7 | 1534 |
8 | 5148 |
9 | 16826 |
10 | 56918 |
11 | 188706 |
12 | 642300 |
13 | 2149072 |
14 | 7348408 |
15 | 24749244 |
16 | 84919630 |
17 | 287439908 |
18 | 988917344 |
19 | 3360535304 |
20 | 11586463472 |
21 | 39498606276 |
22 | 136421151864 |
23 | 466287543690 |
24 | 1612808711870 |
25 | 5524756100592 |
[1,6,14,48,144,482,1534,5148,16826,56918,188706, 642300,2149072,7348408,24749244,84919630, 287439908,988917344,3360535304,11586463472, 39498606276,136421151864,466287543690, 1612808711870,5524756100592] |