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A138377 as a simple table

na(n)
00
11
23
32
40
5-4
6-12
7-8
80
916
1048
1132
120
13-64
14-192
15-128
160
17256
18768
19512
200
21-1024
22-3072
23-2048
240
254096
2612288
278192
280
29-16384
30-49152
31-32768
320
3365536
34196608
35131072
360
37-262144
38-786432
39-524288
400
411048576
423145728
432097152
440
45-4194304
46-12582912
47-8388608
480
4916777216
5050331648

[0,1,3,2,0,-4,-12,-8,0,16,48,32,0,-64,-192,-128,0,
 256,768,512,0,-1024,-3072,-2048,0,4096,12288,8192,
 0,-16384,-49152,-32768,0,65536,196608,131072,0,
 -262144,-786432,-524288,0,1048576,3145728,2097152,
 0,-4194304,-12582912,-8388608,0,16777216,50331648]