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A247343 as a simple table

na(n)
11
2-4
3-4
46
5-4
616
7-4
8-4
96
1016
11-4
12-24
13-4
1416
1516
161
17-4
18-24
19-4
20-24
2116
2216
23-4
2416
256
2616
27-4
28-24
29-4
30-64
31-4
320
3316
3416
3516
3636
37-4
3816
3916
4016
41-4
42-64
43-4
44-24
45-24
4616
47-4
48-4
496
50-24
5116
52-24
53-4
5416
5516
5616
5716
5816
59-4
6096
61-4
6216
63-24
640
6516
66-64
67-4
68-24
6916
70-64

[1,-4,-4,6,-4,16,-4,-4,6,16,-4,-24,-4,16,16,1,-4,
 -24,-4,-24,16,16,-4,16,6,16,-4,-24,-4,-64,-4,0,16,
 16,16,36,-4,16,16,16,-4,-64,-4,-24,-24,16,-4,-4,6,
 -24,16,-24,-4,16,16,16,16,16,-4,96,-4,16,-24,0,16,
 -64,-4,-24,16,-64]