n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 22 |
4 | 55 |
5 | 133 |
6 | 323 |
7 | 780 |
8 | 1885 |
9 | 4551 |
10 | 10989 |
11 | 26530 |
12 | 64051 |
13 | 154633 |
14 | 373319 |
15 | 901272 |
16 | 2175865 |
17 | 5253003 |
18 | 12681873 |
19 | 30616750 |
20 | 73915375 |
21 | 178447501 |
22 | 430810379 |
23 | 1040068260 |
24 | 2510946901 |
25 | 6061962063 |
26 | 14634871029 |
27 | 35331704122 |
28 | 85298279275 |
29 | 205928262673 |
[1,3,9,22,55,133,323,780,1885,4551,10989,26530, 64051,154633,373319,901272,2175865,5253003, 12681873,30616750,73915375,178447501,430810379, 1040068260,2510946901,6061962063,14634871029, 35331704122,85298279275,205928262673] |