n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 8 |
6 | 21 |
7 | 53 |
8 | 151 |
9 | 458 |
10 | 1477 |
11 | 4918 |
12 | 16956 |
13 | 59494 |
14 | 212364 |
15 | 766753 |
16 | 2796876 |
17 | 10284793 |
18 | 38096072 |
19 | 141998218 |
20 | 532301941 |
21 | 2005638293 |
22 | 7592441954 |
23 | 28865031086 |
24 | 110174528925 |
25 | 422064799013 |
26 | 1622379252093 |
[1,1,2,4,8,21,53,151,458,1477,4918,16956,59494, 212364,766753,2796876,10284793,38096072,141998218, 532301941,2005638293,7592441954,28865031086, 110174528925,422064799013,1622379252093] |