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A306707 as a simple table

na(n)
01
11
2-1
31
40
50
6-2
72
82
9-1
10-7
115
128
13-4
14-22
1523
1630
17-32
18-101
19102
20160
21-81
22-434
23288
24515
25-249
26-1393
271542
281756
29-1950
30-6694
317040
3210192
33-4724
34-29594
3518851
3630282
37-9298
38-89627
39106068
4097255
41-127909
42-453650
43498939
44641627
45-207845
46-2026461

[1,1,-1,1,0,0,-2,2,2,-1,-7,5,8,-4,-22,23,30,-32,
 -101,102,160,-81,-434,288,515,-249,-1393,1542,
 1756,-1950,-6694,7040,10192,-4724,-29594,18851,
 30282,-9298,-89627,106068,97255,-127909,-453650,
 498939,641627,-207845,-2026461]