n | a(n) |
---|---|
4 | 1 |
5 | 13 |
6 | 37 |
7 | 73 |
8 | 333 |
9 | 3889 |
10 | 39159 |
11 | 271617 |
12 | 3012146 |
13 | 61623325 |
14 | 1541710905 |
15 | 35611299121 |
16 | 1059291769629 |
17 | 47181801621713 |
18 | 2749984961944969 |
[1,13,37,73,333,3889,39159,271617,3012146, 61623325,1541710905,35611299121,1059291769629, 47181801621713,2749984961944969] |