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A118434 as a simple table

na(n)
01
10
22
34
4-4
50
6-8
7-16
816
90
1032
1164
12-64
130
14-128
15-256
16256
170
18512
191024
20-1024
210
22-2048
23-4096
244096
250
268192
2716384
28-16384
290
30-32768
31-65536
3265536
330
34131072
35262144
36-262144
370
38-524288
39-1048576
401048576
410
422097152
434194304
44-4194304

[1,0,2,4,-4,0,-8,-16,16,0,32,64,-64,0,-128,-256,
 256,0,512,1024,-1024,0,-2048,-4096,4096,0,8192,
 16384,-16384,0,-32768,-65536,65536,0,131072,
 262144,-262144,0,-524288,-1048576,1048576,0,
 2097152,4194304,-4194304]