n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 11 |
4 | 30 |
5 | 91 |
6 | 303 |
7 | 936 |
8 | 2936 |
9 | 9300 |
10 | 29209 |
11 | 91917 |
12 | 289547 |
13 | 911218 |
14 | 2868341 |
15 | 9029949 |
16 | 28424456 |
17 | 89477119 |
18 | 281667368 |
19 | 886657081 |
20 | 2791106585 |
21 | 8786130132 |
22 | 27657838272 |
23 | 87064082194 |
24 | 274068969337 |
25 | 862741399379 |
26 | 2715822822365 |
27 | 8549136143060 |
28 | 26911817257385 |
[1,1,2,11,30,91,303,936,2936,9300,29209,91917, 289547,911218,2868341,9029949,28424456,89477119, 281667368,886657081,2791106585,8786130132, 27657838272,87064082194,274068969337,862741399379, 2715822822365,8549136143060,26911817257385] |