n | a(n) |
---|---|
0 | -1 |
1 | 9 |
2 | 161 |
3 | 1665 |
4 | 14849 |
5 | 124929 |
6 | 1024001 |
7 | 8290305 |
8 | 66715649 |
9 | 535298049 |
10 | 4288675841 |
11 | 34334572545 |
12 | 274777243649 |
13 | 2198620602369 |
14 | 17590575431681 |
15 | 140731045904385 |
16 | 1125874137038849 |
17 | 9007096175525889 |
18 | 72057181721067521 |
19 | 576459103035981825 |
[-1,9,161,1665,14849,124929,1024001,8290305, 66715649,535298049,4288675841,34334572545, 274777243649,2198620602369,17590575431681, 140731045904385,1125874137038849,9007096175525889, 72057181721067521,576459103035981825] |