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A138231 as a simple table

na(n)
00
11
21
31
42
50
62
7-2
80
9-4
10-4
11-4
12-8
130
14-8
158
160
1716
1816
1916
2032
210
2232
23-32
240
25-64
26-64
27-64
28-128
290
30-128
31128
320
33256
34256
35256
36512
370
38512
39-512
400
41-1024
42-1024
43-1024
44-2048
450
46-2048
472048
480
494096
504096
514096
528192
530
548192
55-8192
560
57-16384
58-16384

[0,1,1,1,2,0,2,-2,0,-4,-4,-4,-8,0,-8,8,0,16,16,16,
 32,0,32,-32,0,-64,-64,-64,-128,0,-128,128,0,256,
 256,256,512,0,512,-512,0,-1024,-1024,-1024,-2048,
 0,-2048,2048,0,4096,4096,4096,8192,0,8192,-8192,0,
 -16384,-16384]