n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 13 |
3 | 63 |
4 | 324 |
5 | 1733 |
6 | 9541 |
7 | 53725 |
8 | 308085 |
9 | 1793528 |
10 | 10574165 |
11 | 63018105 |
12 | 379061652 |
13 | 2298508872 |
14 | 14035737150 |
15 | 86239762294 |
16 | 532743452260 |
17 | 3305228985864 |
18 | 20546951820588 |
19 | 127237301998014 |
20 | 774257153670067 |
[1,3,13,63,324,1733,9541,53725,308085,1793528, 10574165,63018105,379061652,2298508872, 14035737150,86239762294,532743452260, 3305228985864,20546951820588,127237301998014, 774257153670067] |