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A084102 as a simple table

na(n)
01
12
2-2
30
44
5-8
68
70
8-16
932
10-32
110
1264
13-128
14128
150
16-256
17512
18-512
190
201024
21-2048
222048
230
24-4096
258192
26-8192
270
2816384
29-32768
3032768
310
32-65536
33131072
34-131072
350
36262144
37-524288
38524288
390
40-1048576
412097152
42-2097152
430
444194304
45-8388608
468388608
470
48-16777216
4933554432

[1,2,-2,0,4,-8,8,0,-16,32,-32,0,64,-128,128,0,
 -256,512,-512,0,1024,-2048,2048,0,-4096,8192,
 -8192,0,16384,-32768,32768,0,-65536,131072,
 -131072,0,262144,-524288,524288,0,-1048576,
 2097152,-2097152,0,4194304,-8388608,8388608,0,
 -16777216,33554432]