n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 12 |
5 | 30 |
6 | 76 |
7 | 196 |
8 | 518 |
9 | 1422 |
10 | 3915 |
11 | 10813 |
12 | 29964 |
13 | 83304 |
14 | 232323 |
15 | 649845 |
16 | 1822824 |
17 | 5147328 |
18 | 14727168 |
19 | 42171849 |
20 | 120870324 |
21 | 346757334 |
22 | 995742748 |
23 | 2862099185 |
24 | 8234447672 |
25 | 23713180780 |
26 | 68350541480 |
27 | 197188167735 |
[1,1,2,5,12,30,76,196,518,1422,3915,10813,29964, 83304,232323,649845,1822824,5147328,14727168, 42171849,120870324,346757334,995742748,2862099185, 8234447672,23713180780,68350541480,197188167735] |