n | a(n) |
---|---|
1 | 1 |
2 | 10 |
3 | 18 |
4 | 45 |
5 | 143 |
6 | 414 |
7 | 1481 |
8 | 5062 |
9 | 17879 |
10 | 62112 |
11 | 217402 |
12 | 764860 |
13 | 2687915 |
14 | 9462966 |
15 | 33320851 |
16 | 117384939 |
17 | 413427418 |
18 | 1456413781 |
19 | 5131048829 |
20 | 18077067261 |
21 | 63688856231 |
22 | 224392218311 |
23 | 790594491334 |
24 | 2785479832548 |
25 | 9814065517891 |
[1,10,18,45,143,414,1481,5062,17879,62112,217402, 764860,2687915,9462966,33320851,117384939, 413427418,1456413781,5131048829,18077067261, 63688856231,224392218311,790594491334, 2785479832548,9814065517891] |