n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 22 |
5 | 89 |
6 | 380 |
7 | 1678 |
8 | 7584 |
9 | 34875 |
10 | 162560 |
11 | 766124 |
12 | 3644066 |
13 | 17469863 |
14 | 84324840 |
15 | 409471090 |
16 | 1998933556 |
17 | 9804748548 |
18 | 48298256084 |
19 | 238840150970 |
20 | 1185256302910 |
21 | 5900843531665 |
22 | 29464355189120 |
23 | 147522603762870 |
24 | 740471407808372 |
25 | 3725334547101464 |
26 | 18782663124890072 |
27 | 94889671255981134 |
[1,1,2,6,22,89,380,1678,7584,34875,162560,766124, 3644066,17469863,84324840,409471090,1998933556, 9804748548,48298256084,238840150970,1185256302910, 5900843531665,29464355189120,147522603762870, 740471407808372,3725334547101464, 18782663124890072,94889671255981134] |