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A074062 as a simple table

na(n)
05
1-1
2-1
3-1
4-1
59
6-7
7-1
8-1
9-1
1019
11-23
125
13-1
14-1
1539
16-65
1733
18-7
19-1
2079
21-169
22131
23-47
245
25159
26-417
27431
28-225
2957
30313
31-993
321279
33-881
34339
35569
36-2299
373551
38-3041
391559
40799
41-5167
429401
43-9633
446159
4539
46-11133
4723969
48-28667
4921951
50-6081
51-22305

[5,-1,-1,-1,-1,9,-7,-1,-1,-1,19,-23,5,-1,-1,39,
 -65,33,-7,-1,79,-169,131,-47,5,159,-417,431,-225,
 57,313,-993,1279,-881,339,569,-2299,3551,-3041,
 1559,799,-5167,9401,-9633,6159,39,-11133,23969,
 -28667,21951,-6081,-22305]