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A131575 as a simple table

na(n)
01
11
20
32
40
54
60
78
80
916
100
1132
120
1364
140
15128
160
17256
180
19512
200
211024
220
232048
240
254096
260
278192
280
2916384
300
3132768
320
3365536
340
35131072
360
37262144
380
39524288
400
411048576
420
432097152
440
454194304
460
478388608
480

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