n | a(n) |
---|---|
2 | 2 |
3 | 3 |
4 | -1 |
5 | 5 |
6 | 5 |
7 | 7 |
8 | -1 |
9 | -1 |
10 | 7 |
11 | 11 |
12 | 7 |
13 | 13 |
14 | -1 |
15 | -1 |
16 | -1 |
17 | 17 |
18 | 11 |
19 | 19 |
20 | -1 |
21 | -1 |
22 | 13 |
23 | 23 |
24 | 11 |
25 | -1 |
26 | -1 |
27 | -1 |
28 | 11 |
29 | 29 |
30 | 11 |
31 | 31 |
32 | -1 |
33 | -1 |
34 | 19 |
35 | -1 |
36 | 11 |
37 | 37 |
38 | -1 |
39 | -1 |
40 | 11 |
41 | 41 |
42 | 13 |
43 | 43 |
44 | -1 |
45 | 11 |
46 | -1 |
47 | 47 |
48 | 11 |
49 | -1 |
50 | -1 |
51 | -1 |
52 | 17 |
53 | 53 |
54 | 11 |
55 | -1 |
56 | 13 |
57 | -1 |
58 | 31 |
59 | 59 |
60 | 13 |
61 | 61 |
62 | -1 |
63 | 13 |
64 | -1 |
65 | -1 |
66 | 17 |
67 | 67 |
68 | -1 |
69 | -1 |
70 | 17 |
71 | 71 |
72 | 13 |
73 | 73 |
74 | -1 |
75 | 13 |
76 | 23 |
77 | -1 |
[2,3,-1,5,5,7,-1,-1,7,11,7,13,-1,-1,-1,17,11,19, -1,-1,13,23,11,-1,-1,-1,11,29,11,31,-1,-1,19,-1, 11,37,-1,-1,11,41,13,43,-1,11,-1,47,11,-1,-1,-1, 17,53,11,-1,13,-1,31,59,13,61,-1,13,-1,-1,17,67, -1,-1,17,71,13,73,-1,13,23,-1] |