n | a(n) |
---|---|
1 | 20 |
2 | 80 |
3 | 212 |
4 | 594 |
5 | 1928 |
6 | 6780 |
7 | 23674 |
8 | 80750 |
9 | 271000 |
10 | 909282 |
11 | 3082640 |
12 | 10545846 |
13 | 36174576 |
14 | 123964062 |
15 | 424595930 |
16 | 1456168762 |
17 | 5004245744 |
18 | 17226485764 |
19 | 59361633214 |
20 | 204702938074 |
21 | 706403203606 |
22 | 2439664629760 |
23 | 8432567247356 |
[20,80,212,594,1928,6780,23674,80750,271000, 909282,3082640,10545846,36174576,123964062, 424595930,1456168762,5004245744,17226485764, 59361633214,204702938074,706403203606, 2439664629760,8432567247356] |