n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 11 |
3 | 30 |
4 | 79 |
5 | 207 |
6 | 542 |
7 | 1419 |
8 | 3715 |
9 | 9726 |
10 | 25463 |
11 | 66663 |
12 | 174526 |
13 | 456915 |
14 | 1196219 |
15 | 3131742 |
16 | 8199007 |
17 | 21465279 |
18 | 56196830 |
19 | 147125211 |
20 | 385178803 |
21 | 1008411198 |
22 | 2640054791 |
23 | 6911753175 |
24 | 18095204734 |
25 | 47373861027 |
26 | 124026378347 |
27 | 324705274014 |
28 | 850089443695 |
[1,3,11,30,79,207,542,1419,3715,9726,25463,66663, 174526,456915,1196219,3131742,8199007,21465279, 56196830,147125211,385178803,1008411198, 2640054791,6911753175,18095204734,47373861027, 124026378347,324705274014,850089443695] |