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A177971 as a simple table

na(n)
01
1-1
21
3-3
44
51
6-5
714
8-8
91
10-7
1132
12-28
1316
141
15-9
1662
17-36
1888
19-32
201
21-11
22112
23104
24448
25-176
2664
271
28-13
29198
30928
312976
32240
33480
34-128
351
36-15
37352
384316
3920448
4017264
415632
42-960
43256
441
45-17
46638
4716500
48126968
49245872
50142752
5111200
522432
53-512
541

[1,-1,1,-3,4,1,-5,14,-8,1,-7,32,-28,16,1,-9,62,
 -36,88,-32,1,-11,112,104,448,-176,64,1,-13,198,
 928,2976,240,480,-128,1,-15,352,4316,20448,17264,
 5632,-960,256,1,-17,638,16500,126968,245872,
 142752,11200,2432,-512,1]