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A341701 as a simple table

na(n)
0-1
1-1
22
33
43
55
6-1
77
8-1
9-1
109
1111
12-1
1313
14-1
15-1
16-1
1717
18-1
1919
20-1
21-1
2221
2323
2423
2513
26-1
2723
28-1
2929
30-1
3131
32-1
33-1
3433
35-1
36-1
3737
38-1
39-1
40-1
4141
4241
4343
44-1
45-1
4639
4747
4841
49-1
50-1
5147
5237
5353
54-1
5543
5647
57-1
5857
5959
6047
6161
62-1
63-1
64-1
65-1
66-1

[-1,-1,2,3,3,5,-1,7,-1,-1,9,11,-1,13,-1,-1,-1,17,
 -1,19,-1,-1,21,23,23,13,-1,23,-1,29,-1,31,-1,-1,
 33,-1,-1,37,-1,-1,-1,41,41,43,-1,-1,39,47,41,-1,
 -1,47,37,53,-1,43,47,-1,57,59,47,61,-1,-1,-1,-1,
 -1]