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A305974 as a simple table

na(n)
11
2-1
3-1
4-2
5-1
62
7-1
8-3
9-2
103
11-1
124
13-1
145
156
16-4
17-1
187
19-1
208
219
2210
23-1
2411
25-2
2612
27-3
2813
29-1
3014
31-1
32-5
3315
3416
3517
3618
37-1
3819
3920
4021
41-1
4222
43-1
4423
4524
4625
47-1
4826
49-2
5027
5128
5229
53-1
5430
5531
5632
5733
5834
59-1
6035
61-1
6236
6337
64-6
6538
6639
67-1
6840
6941
7042
71-1
7243
73-1
7444
7545
7646
7747
7848
79-1
8049
81-4
8250
83-1
8451
8552

[1,-1,-1,-2,-1,2,-1,-3,-2,3,-1,4,-1,5,6,-4,-1,7,
 -1,8,9,10,-1,11,-2,12,-3,13,-1,14,-1,-5,15,16,17,
 18,-1,19,20,21,-1,22,-1,23,24,25,-1,26,-2,27,28,
 29,-1,30,31,32,33,34,-1,35,-1,36,37,-6,38,39,-1,
 40,41,42,-1,43,-1,44,45,46,47,48,-1,49,-4,50,-1,
 51,52]