n | a(n) |
---|---|
1 | 4 |
2 | 17 |
3 | 101 |
4 | 670 |
5 | 4675 |
6 | 34425 |
7 | 262549 |
8 | 2051466 |
9 | 16312743 |
10 | 131464721 |
11 | 1071368863 |
12 | 8809580516 |
13 | 72986908554 |
14 | 608542410004 |
[4,17,101,670,4675,34425,262549,2051466,16312743, 131464721,1071368863,8809580516,72986908554, 608542410004] |