n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 11 |
4 | 33 |
5 | 98 |
6 | 293 |
7 | 877 |
8 | 2628 |
9 | 7879 |
10 | 23629 |
11 | 70874 |
12 | 212601 |
13 | 637769 |
14 | 1913252 |
15 | 5739667 |
16 | 17218857 |
17 | 51656338 |
18 | 154968637 |
19 | 464905301 |
20 | 1394714916 |
21 | 4184143151 |
22 | 12552426869 |
23 | 37657276426 |
24 | 112971822513 |
25 | 338915456593 |
26 | 1016746352068 |
27 | 3050239027547 |
28 | 9150717036273 |
[1,1,4,11,33,98,293,877,2628,7879,23629,70874, 212601,637769,1913252,5739667,17218857,51656338, 154968637,464905301,1394714916,4184143151, 12552426869,37657276426,112971822513,338915456593, 1016746352068,3050239027547,9150717036273] |