n | a(n) |
---|---|
2 | 2 |
3 | 5 |
4 | 4 |
5 | 17 |
6 | -1 |
7 | 109 |
8 | 8 |
9 | 65 |
10 | 89 |
11 | 1115 |
12 | -1 |
13 | 7297 |
14 | 2531 |
15 | 4369 |
16 | 16 |
17 | 257 |
18 | 155174 |
19 | 195814 |
20 | 495146 |
21 | 5201 |
22 | 1334551 |
23 | 1725452 |
24 | 1485482 |
25 | -1 |
26 | -1 |
27 | -1 |
28 | 17256565 |
29 | 277691849 |
30 | 6145997 |
31 | 2029501 |
32 | 32 |
33 | 1025 |
34 | 67672804 |
35 | 1157011598 |
36 | 12054050100 |
37 | 22287270331 |
38 | 15597512810 |
39 | -1 |
[2,5,4,17,-1,109,8,65,89,1115,-1,7297,2531,4369, 16,257,155174,195814,495146,5201,1334551,1725452, 1485482,-1,-1,-1,17256565,277691849,6145997, 2029501,32,1025,67672804,1157011598,12054050100, 22287270331,15597512810,-1] |