n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 11 |
6 | 32 |
7 | 117 |
8 | 468 |
9 | 2152 |
10 | 10743 |
11 | 58487 |
12 | 340390 |
13 | 2110219 |
14 | 13830235 |
15 | 95475556 |
16 | 691543094 |
17 | 5240285139 |
18 | 41432986588 |
19 | 341040317063 |
20 | 2916376237350 |
21 | 25862097486758 |
22 | 237434959191057 |
23 | 2253358057283035 |
24 | 22076003468637450 |
25 | 222979436690612445 |
[1,1,1,2,4,11,32,117,468,2152,10743,58487,340390, 2110219,13830235,95475556,691543094,5240285139, 41432986588,341040317063,2916376237350, 25862097486758,237434959191057,2253358057283035, 22076003468637450,222979436690612445] |