n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 29 |
5 | 94 |
6 | 310 |
7 | 1026 |
8 | 3411 |
9 | 11360 |
10 | 37886 |
11 | 126442 |
12 | 422203 |
13 | 1410189 |
14 | 4711039 |
15 | 15740098 |
16 | 52593430 |
17 | 175742438 |
18 | 587266782 |
19 | 1962469721 |
20 | 6558071499 |
21 | 21915580437 |
22 | 73237274083 |
23 | 244744474601 |
24 | 817889464220 |
25 | 2733235019732 |
26 | 9133973730633 |
27 | 30524096110942 |
28 | 102006076541264 |
[1,1,3,9,29,94,310,1026,3411,11360,37886,126442, 422203,1410189,4711039,15740098,52593430, 175742438,587266782,1962469721,6558071499, 21915580437,73237274083,244744474601,817889464220, 2733235019732,9133973730633,30524096110942, 102006076541264] |