n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 6 |
4 | 15 |
5 | 34 |
6 | 83 |
7 | 198 |
8 | 488 |
9 | 1202 |
10 | 3015 |
11 | 7608 |
12 | 19432 |
13 | 49994 |
14 | 129779 |
15 | 339176 |
16 | 892600 |
17 | 2362634 |
18 | 6288156 |
19 | 16816232 |
20 | 45170466 |
21 | 121812152 |
22 | 329679487 |
23 | 895171236 |
24 | 2437885058 |
25 | 6657311202 |
26 | 18224979884 |
27 | 50006899724 |
28 | 137502724754 |
[1,1,3,6,15,34,83,198,488,1202,3015,7608,19432, 49994,129779,339176,892600,2362634,6288156, 16816232,45170466,121812152,329679487,895171236, 2437885058,6657311202,18224979884,50006899724, 137502724754] |